Fix various (doxy) typos and whitespace issues

Found via `codespell -q 3 -L aci,ake,aline,alle,alledges,alocation,als,ang,anid,ba,beginn,behaviour,bloaded,byteorder,calculater,cancelled,cancelling,cas,cascade,centimetre,childs,colour,colours,commen,currenty,dof,doubleclick,dum,eiter,elemente,feld,freez,hist,iff,indicies,initialisation,initialise,initialised,initialises,initialisiert,ist,kilometre,lod,mantatory,methode,metres,millimetre,modell,nd,noe,normale,normaly,nto,numer,oder,orgin,orginx,orginy,ot,pard,pres,programm,que,recurrance,rougly,seperator,serie,sinc,strack,substraction,te,thist,thru,tread,uint,unter,vertexes,wallthickness,whitespaces -S ./.git,*.po,*.ts,./ChangeLog.txt,./src/3rdParty,./src/Mod/Assembly/App/opendcm,./src/CXX,./src/zipios++,./src/Base/swig*,./src/Mod/Robot/App/kdl_cp,./src/Mod/Import/App/SCL,./src/WindowsInstaller,./src/Doc/FreeCAD.uml`

src/App/Application.cpp

@@ -130,13 +130,13 @@
 using namespace App;
 using namespace std;
 using namespace boost;
-using namespace boost::program_options;
-
-
-// scriptings (scripts are build in but can be overridden by command line option)
-#include <App/InitScript.h>
-#include <App/TestScript.h>
-#include <App/CMakeScript.h>
+using namespace boost::program_options;
+
+
+// scriptings (scripts are built-in but can be overridden by command line option)
+#include <App/InitScript.h>
+#include <App/TestScript.h>
+#include <App/CMakeScript.h>
 
 #ifdef _MSC_VER // New handler for Microsoft Visual C++ compiler
 # pragma warning( disable : 4535 )
@@ -2241,7 +2241,7 @@ void Application::LoadParameters(void)
 
 #if defined(_MSC_VER)
 // fix weird error while linking boost (all versions of VC)
-// VS2010: http://forum.freecadweb.org/viewtopic.php?f=4&t=1886&p=12553&hilit=boost%3A%3Afilesystem%3A%3Aget#p12553
+// VS2010: https://forum.freecadweb.org/viewtopic.php?f=4&t=1886&p=12553&hilit=boost%3A%3Afilesystem%3A%3Aget#p12553
 namespace boost { namespace program_options { std::string arg="arg"; } }
 #if (defined (BOOST_VERSION) && (BOOST_VERSION >= 104100))
 namespace boost { namespace program_options {
@@ -2931,7 +2931,7 @@ std::string Application::FindHomePath(const char* sCall)
     binPath += L"bin";
     SetDllDirectoryW(binPath.c_str());
 
-    // http://stackoverflow.com/questions/5625884/conversion-of-stdwstring-to-qstring-throws-linker-error
+    // https://stackoverflow.com/questions/5625884/conversion-of-stdwstring-to-qstring-throws-linker-error
 #ifdef _MSC_VER
     QString str = QString::fromUtf16(reinterpret_cast<const ushort *>(homePath.c_str()));
 #else

src/App/Document.cpp

@@ -193,7 +193,7 @@ struct DocumentP
         static std::random_device _RD;
         static std::mt19937 _RGEN(_RD());
         static std::uniform_int_distribution<> _RDIST(0,5000);
-        // Set some random offset to reduce likelihood of ID collison when
+        // Set some random offset to reduce likelihood of ID collision when
         // copying shape from other document. It is probably better to randomize
         // on each object ID.
         lastObjectId = _RDIST(_RGEN); 
@@ -4129,7 +4129,7 @@ DocumentObject* Document::moveObject(DocumentObject* obj, bool recursive)
     if(objs.empty()) 
         return 0;
     // Some object may delete its children if deleted, so we collect the IDs
-    // or all depdending objects for safety reason.
+    // or all depending objects for safety reason.
     std::vector<int> ids;
     ids.reserve(deps.size());
     for(auto o : deps)

src/App/DocumentObject.cpp

@@ -361,7 +361,7 @@ std::vector<App::DocumentObject*> DocumentObject::getInListRecursive(void) const
 
 #else
 // The original algorithm is highly inefficient in some special case.
-// Considering an object is linked by every other objects. After exculding this
+// Considering an object is linked by every other objects. After excluding this
 // object, there is another object linked by every other of the remaining
 // objects, and so on.  The vector 'result' above will be of magnitude n^2.
 // Even if we replace the vector with a set, we still need to visit that amount
@@ -1197,4 +1197,3 @@ void DocumentObject::onPropertyStatusChanged(const Property &prop, unsigned long
     if(!Document::isAnyRestoring() && getNameInDocument() && getDocument())
         getDocument()->signalChangePropertyEditor(*getDocument(),prop);
 }
-

src/App/DocumentObject.h

@@ -123,7 +123,7 @@ public:
     /**
      * The function indicates whether the object type allows to define a view provider type
      * different than the standard type. The default implementation returns false.
-     * The function can be overriden by Python feature to return true where the type can be
+     * The function can be overridden by Python feature to return true where the type can be
      * retrieved from its proxy object.
      * \sa getViewProviderNameOverride()
      */
@@ -623,7 +623,7 @@ private:
     // accessed by App::Document to record and restore the correct view provider type
     std::string _pcViewProviderName;
 
-    // unique identifier (ammong a document) of this object.
+    // unique identifier (among a document) of this object.
     long _Id;
     
 private:

src/App/Link.cpp

@@ -761,7 +761,7 @@ void LinkBaseExtension::update(App::DocumentObject *parent, const Property *prop
         else {
             auto objs = getElementListValue();
 
-            // preseve element properties in ourself
+            // preserve element properties in ourself
             std::vector<Base::Placement> placements;
             placements.reserve(objs.size());
             std::vector<Base::Vector3d> scales;

src/App/ObjectIdentifier.h

@@ -375,8 +375,8 @@ public:
 
     Py::Object getPyValue(bool pathValue=false, bool *isPseudoProperty=0) const;
 
-    // Setter; is const because it does not alter the object state,
-    // but does have a aide effect.
+    // Setter: is const because it does not alter the object state,
+    // but does have an aiding effect.
 
     void setValue(const App::any & value) const;
 

src/App/Origin.cpp

@@ -93,7 +93,7 @@ App::Plane *Origin::getPlane( const char *role ) const {
         return static_cast<App::Plane *> (feat);
     } else {
         std::stringstream err;
-        err << "Origin \"" << getFullName () << "\" comtains bad Plane object for role \""
+        err << "Origin \"" << getFullName () << "\" contains bad Plane object for role \""
             << role << '"';
         throw Base::RuntimeError ( err.str().c_str () );
     }

src/App/PropertyContainer.cpp

@@ -244,9 +244,9 @@ void PropertyContainer::Save (Base::Writer &writer) const
     writer.Stream() << writer.ind() << "<Properties Count=\"" << Map.size()
                     << "\" TransientCount=\"" << transients.size() << "\">" << endl;
 
-    // First store transient properties to persisit their status value. We use
+    // First store transient properties to persist their status value. We use
     // a new element named "_Property" so that the save file can be opened by
-    // older version FC.
+    // older versions of FC.
     writer.incInd();
     for(auto prop : transients) {
         writer.Stream() << writer.ind() << "<_Property name=\"" << prop->getName() 
@@ -635,4 +635,3 @@ void PropertyContainer::Restore(Base::Reader &reader)
 \endcode
 
 */
-

src/App/PropertyLinks.cpp

@@ -2428,14 +2428,14 @@ bool PropertyLinkSubList::adjustLink(const std::set<App::DocumentObject*> &inLis
 // DocInfo
 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 
-// Key on aboslute path. 
+// Key on absolute path.
 // Because of possible symbolic links, multiple entry may refer to the same
 // file. We use QFileInfo::canonicalPath to resolve that.
 typedef std::map<QString,DocInfoPtr> DocInfoMap;
 DocInfoMap _DocInfoMap;
 
 class App::DocInfo : 
-    public std::enable_shared_from_this<App::DocInfo> 
+    public std::enable_shared_from_this<App::DocInfo>
 {
 public:
     typedef boost::signals2::scoped_connection Connection;
@@ -3099,7 +3099,7 @@ void PropertyXLink::Save (Base::Writer &writer) const {
         std::string _path;
         if(exporting) {
             // Here means we are exporting the owner but not exporting the
-            // linked object.  Try to use aboslute file path for easy transition
+            // linked object.  Try to use absolute file path for easy transition
             // into document at different directory
             if(docInfo) 
                 _path = docInfo->filePath();