Fixed issue #2076: Issue Tracker Integration is broken in 1.8.7.0

Signed-off-by: Sven Strickroth <email@cs-ware.de>
Simplify code

Signed-off-by: Sven Strickroth <email@cs-ware.de>
Fix "menurebase.ico" in order to display properly in Settings dialog

(fixes issue #2124)

Signed-off-by: Ricardo Alexandre Vieira <vierinha@gmail.com>
Signed-off-by: Sven Strickroth <email@cs-ware.de>
Update "Push.ico" to look more similar to Pull and Commit icons

Signed-off-by: Ricardo Alexandre Vieira <vierinha@gmail.com>
Update menusync.ico in order to display properly in Settings dialog

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