Improved all left and right margins. Fixed List view if necessary

This is to get spaces from the left and right screen. Not much. But it looks better with scroll bars and so on.

I changed the commit List, because Date and Login Name could not stay in one row. Too less Space.

Only List wich should also be updated: owned Repo and Watched Repo. But I couldn't find the Template for it.

@AlbertoMonteiro: Maybe you can merge this? So I don't have to change all files again... :D