Addon Manager: Translation cleanup

pylupdate does not extract translations when f-strings are used for the
translated text, so all f-strings are migrated to calls to format().
Several other minor translation issues are also addressed.

NOTE: This code has been run through the Black reformatter, which adds
trailing commas in many places that the stock Qt 5.x pylupdate does not
recognize. This code must be processed with the corrected pylupdate to
generate the correct translations.

src/Mod/AddonManager/addonmanager_utilities.py

@@ -24,7 +24,6 @@
 import os
 import re
 import ctypes
-import ssl
 from typing import Union, Optional
 
 import urllib
@@ -38,20 +37,6 @@ from PySide2 import QtCore, QtWidgets
 import FreeCAD
 import FreeCADGui
 
-# check for SSL support
-
-ssl_ctx = None
-try:
-    import ssl
-except ImportError:
-    pass
-else:
-    try:
-        # ssl_ctx = ssl.create_default_context(cafile=certifi.where())
-        # ssl_ctx = ssl.create_default_context(ssl.Purpose.CLIENT_AUTH)
-        ssl_ctx = ssl.create_default_context(ssl.Purpose.SERVER_AUTH)
-    except AttributeError:
-        pass
 
 #  @package AddonManager_utilities
 #  \ingroup ADDONMANAGER
@@ -59,15 +44,7 @@ else:
 #  @{
 
 
-def translate(context, text, disambig=None):
-    "Main translation function"
-
-    try:
-        _encoding = QtWidgets.QApplication.UnicodeUTF8
-    except AttributeError:
-        return QtWidgets.QApplication.translate(context, text, disambig)
-    else:
-        return QtWidgets.QApplication.translate(context, text, disambig, _encoding)
+translate = FreeCAD.Qt.translate
 
 
 def symlink(source, link_name):