CommitesMode now take git in init.
CommitesModel: fix crash on get data of empty model.
CommitesModel: some small fixes.
CommitesModel: add EditRole.
TestCommitesModel: check first field.
CommitesModel: AbbreviatedIdField is added.
Commit: git is added.
CommitesModel: CommentField is added.
CommitesModel: AuthorField is added.
CommitesModel: TimestampField is added.
CommitesModel: use fields.
Styling. Small refactoring.
CommentField: return full_name by default.
Merge pull request #26 from panter-dsd/Refactoring/CommitesModel

Refactoring/commites model