feature(MusicTableView): add bookmark sign (green checkmark)
refactor(): clear todo’s, introduce base classes, add MCActionSheet
refactor(MCActionSheet): integrate checkmark method
refactor(MusicTableView): show date+descending by default, cleanups
feature(MusicTableView): pop on deleting all cells
ADD: Podfile (cocoapods)

FIX: navbar icon fading on main thread
ADD: InfoBoxView
FIX: fade in preferences button
ADD: use InfoBoxView instead of UIAlertView
feature: InfoBoxImageView (experimental)
FIX: show InfoBoxImageView above actionSheet
UI: InfoBoxImageView logic

FIX: Music Prefs Action Sheet title setter
UI: display checkmark with chosen sort order
UI: preventing to animate info box in if action sheet is being dismissed
UI: add pattern images

use transparent music table cells
set view controller titles
fix progress bar auto resize mask
ascending (yes/no) toggle via checkmark
Merge branch 'feature/Refactoring' into develop