Merge branch 'pu/pb/index_refactor'

Merge branch 'pu/pb/index_refactor'

* pu/pb/index_refactor: (24 commits)
  PBGitIndex: post notifications when index stuff fails
  GitIndexController: reorder methods a bit, remove unnecessary stuff
  PBGitIndex: Migrate discardChanges to the GitIndex
  CommitController: Make commit message editable after commit failed
  GitIndex: Fix a few comments
  GitIndex: explicitly tell when stuff is updated
  Remove cruft
  Show previous commit message when amending
  CommitController: Empty commit title when commit is successful
  CommitView: Remove cruft
  Add failed commit notifications
  GitIndex: add commit notifications
  CommitController: Add status messages for index operations
  GitIndex: Add a few notifications
  CommitView: Migrate patch apply stuff to GitIndex
  GitIndex: Add support for applying patches
  CommitController: Replace commit method with the one from GitIndex
  GitIndex: add basic commit method
  GitIndexController: Migrate stageFiles functions to GitIndex
  GitIndex: Add methods to stage and unstage files
  ...

Conflicts:
	PBGitCommitController.m
	PBGitIndexController.h
	PBGitIndexController.m