Main menu: Create new menu "Tools" and move some items from menu Start to there.
Main menu: add "..." where suitable, move Plugins settings menu item to bottom of menu, minor fix
Hide variable menu items during the transition from dashboard to repo browser and vice versa
main menu: move Refresh item from Start to Repository and Dashboard
main menu: fix F5 keyboard shortcut
fix variable/method naming
Add menu item Repository --> "Repository settings..." that jumps to local settings page
minor: remove an icon from the commit dialog working dir menu which looks the same but has different meaning
HelpImageDisplayUserControl: move hover text from bottom to top
Add first version of GotoUserManualControl and use it in FormDeleteBranch
FormCreateBranch: add GotoManualControl and fix minimum size
GotoUserManualControl: add tooltip
update GitExtensionsDoc
GotoUserManualControl: switch from tmp doc location to latest online manual
Merge pull request #1739 from feinstaub/topic_help_ui

Add Help link that opens GitExt manual in browser at predefined section
Merge pull request #1738 from feinstaub/topic_menu

Main menu fixes / improvements
AsyncLoader rewrited to System.Threading.Tasks.Task in some places
AsyncLoader rewrited to use Task class
ImpactLoader support collecting information in several threads for submodules
AsyncLoader fixed when Task canceled