Implement git describe in Log Dialog

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>
Can set describe options

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>
Signed-off-by: Sven Strickroth <email@cs-ware.de>
Merge branch 'git-describe'

(fixes issue #1316)

Signed-off-by: Sven Strickroth <email@cs-ware.de>
Optimize control widths

Signed-off-by: Sven Strickroth <email@cs-ware.de>
Fix warnings

Signed-off-by: Sven Strickroth <email@cs-ware.de>
Fixed issue #2294: Submodule Update dialog doesn't save its state

Signed-off-by: Sven Strickroth <email@cs-ware.de>
Use "Check certificate" dialog also for SMTP sessions

Signed-off-by: Sven Strickroth <email@cs-ware.de>
Fix Rebase Dialog Upstream ComboBox had wrong initial tooltip

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