OSX: Implemented most of LoopsPresenter and LoopDetailsPresenter.

- Added actions/methods in ILoopDetailsView, ILoopsView and
ISegmentDetailsView.
- Also updated MainWindowController implementation for these views.
- Fixed crash bug in MainWindowController (sometimes was refering to a
marker out of array bounds)
Merge branch 'dev' of https://github.com/ycastonguay/MPfm into dev