Misc. typos

+ some are doxy others are just comment code.  
+ some minor whitespace and grammatical tweaks. 
+ app/SCL/* typos have also been submitted upstream (https://github.com/stepcode/stepcode/pull/366). So it's ok to merge them in to master.

src/Mod/Drawing/App/FeatureClip.h

@@ -50,7 +50,7 @@ public:
     App::PropertyString ViewResult;
     App::PropertyBool Visible;
 
-    /** @name methods overide Feature */
+    /** @name methods override Feature */
     //@{
     /// recalculate the Feature
     virtual App::DocumentObjectExecReturn *execute(void);

src/Mod/Drawing/App/FeaturePage.h

@@ -49,7 +49,7 @@ public:
     App::PropertyFile Template;
     App::PropertyStringList EditableTexts;
 
-    /** @name methods overide Feature */
+    /** @name methods override Feature */
     //@{
     /// recalculate the Feature
     virtual App::DocumentObjectExecReturn *execute(void);

src/Mod/Drawing/App/FeatureProjection.h

@@ -59,7 +59,7 @@ public:
     App::PropertyBool   OutLineHCompound;
     App::PropertyBool   IsoLineHCompound;
 
-    /** @name methods overide feature */
+    /** @name methods override feature */
     //@{
     /// recalculate the Feature
     virtual App::DocumentObjectExecReturn *execute(void);

src/Mod/Drawing/App/FeatureView.h

@@ -58,7 +58,7 @@ public:
     }
 
 protected:
-    /** @name methods overide Feature */
+    /** @name methods override Feature */
     //@{
     /// recalculate the Feature
     virtual App::DocumentObjectExecReturn *recompute(void);

src/Mod/Drawing/App/FeatureViewAnnotation.h

@@ -52,7 +52,7 @@ public:
     App::PropertyString       Font;
     App::PropertyColor        TextColor;
 
-    /** @name methods overide Feature */
+    /** @name methods override Feature */
     //@{
     /// recalculate the Feature
     virtual App::DocumentObjectExecReturn *execute(void);

src/Mod/Drawing/App/FeatureViewPart.h

@@ -57,7 +57,7 @@ public:
     App::PropertyFloatConstraint  Tolerance;
 
 
-    /** @name methods overide Feature */
+    /** @name methods override Feature */
     //@{
     /// recalculate the Feature
     virtual App::DocumentObjectExecReturn *execute(void);

src/Mod/Drawing/App/FeatureViewSpreadsheet.cpp

@@ -78,7 +78,7 @@ App::DocumentObjectExecReturn *FeatureViewSpreadsheet::execute(void)
     if ( (scellstart.empty()) || (scellend.empty()) )
         return new App::DocumentObjectExecReturn("Empty cell value");
     
-    // build a list of available colums: A, B, C, ... AA, AB, ... ZY, ZZ.
+    // build a list of available columns: A, B, C, ... AA, AB, ... ZY, ZZ.
     std::string alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
     std::vector<std::string> availcolumns;
     for (int i=0; i<26; ++i) {

src/Mod/Drawing/App/FeatureViewSpreadsheet.h

@@ -50,7 +50,7 @@ public:
     App::PropertyFloat        LineWidth;
     App::PropertyFloat        FontSize;
 
-    /** @name methods overide Feature */
+    /** @name methods override Feature */
     //@{
     /// recalculate the Feature
     virtual App::DocumentObjectExecReturn *execute(void);

src/Mod/Drawing/App/FeatureViewSymbol.h

@@ -51,7 +51,7 @@ public:
     App::PropertyString       Symbol;
     App::PropertyStringList   EditableTexts;
 
-    /** @name methods overide Feature */
+    /** @name methods override Feature */
     //@{
     /// recalculate the Feature
     virtual App::DocumentObjectExecReturn *execute(void);