Submodule GitExtensionsDoc updated

Submodule GitExtensionsDoc:
    > a120c4e - Fix incomplete sentence.
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Merge branch 'master' of git://github.com/gitextensions/gitextensions
Merge branch 'master' of git://github.com/gitextensions/gitextensions
Merge branch 'master' of git://github.com/gitextensions/gitextensions
Merge branch 'master' of git://github.com/gitextensions/gitextensions
Merge branch 'master' of https://github.com/gitextensions/gitextensions
Merge branch 'master' of git://github.com/vbjay/gitextensions
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Add submodule fetch option to BackgroundFetch plugin
Add Fetch All Submodules sample script
Update Korean translation (Settings)
Fixed TabIndex on AppearanceSettingsPage and layout to match all locales and enlarged Apply button in FormSettings and buttons in FormResetChanges

Change-Id: If023fad174ecbe29777e8f0a0cff0802450a0ceb
Merge pull request #2103 from Copro/master

Fixed TabIndex on AppearanceSettingsPage and layout to match all locales...
#1247: Permanent CommandBar installation

Conflicts:
	GitPlugin/Connect.cs
	GitPlugin/Plugin.cs
Merge branch 'master' of https://github.com/gitextensions/gitextensions
Revert "FormStatus displaying under Mono fixed". Closes #2106

This reverts commit 482bf066cc7f78146fa7ac4b8052a26b9c6f29dc.
Version changed to 2.47.1