ContextMenu: Moved "Revision Graph" further down

Signed-off-by: Sven Strickroth <email@cs-ware.de>
Renamed == Bug Fix == to == Bug Fixes ==

Signed-off-by: Sven Strickroth <email@cs-ware.de>
Deduplicate code for retrieving libgit2 errors

Signed-off-by: Sven Strickroth <email@cs-ware.de>
Fix broken build in last commit

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>
Can specify specific paths of submodules to update

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>
Drop unused include

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>
Use static method

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>
Merge dialog supports adding multiple parents

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>
Can select multiple revisions to merge in Log Dialog

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>
Update documentation

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>