added a commit dialog
connected signal aboutToCommit
removed obsolete includes
retrieve trimmed commit message from dialog and check, if message is empty
moved commit methods to CommitDialog
added empty frame for amending a repository's head commit
removed obsolete signal connection
changed layout order of splitters
added working simple commit action
commits should be controlled by a specific operation mechanism in the future
using the commit operation
default signature is automatically assigned
use new CommitOperation API
fixed typo
Merge pull request #86 from macgitver/nf/f/commit-changes

feature: commit changes to repository