Move IDE.MachineStateModal and IDE.ModalView to main app
IDE.OnboardingModal: base on EnvironmentsModalView
IDE:AppController: Use EnvironmentsMachineStateModal instead
Merge pull request #51 from koding/environments

Move IDE.MachineStateModal to Main app
README: added references section
Pane: Allow optional pane hash. Create if not passed.
DrawingPane: Emit `ChangeHappened` event when drawing board updated.
IDEView: Create drawing board with hash.
ParticipantView: Add drawing board and browser pane into open panes list.
RealTimeManager: Handle API changes of Google Realtime.
AppController: Create drawing pane with hash if exists.
AppController: Moved changes map creation inside loadCollaborationFile method.
Collaboration: Pass type option to bind realtime listeners.
Collaboration: Return handling change if context is not exists.
Collaboration: Handle changes for drawing board to redraw it.
Collaboration: Create drawing board from participants modal.
Merge branch 'master' of github.com:koding/IDE into collaboration