- in tags editing (feed or episode), fixed tags not being removed
- added basic functionalities to manage timers
- adding a timer now supports a full calendar
- in EpisodeInfo, added icon to add/show/edit/remove timers
- click on it, if no timers, opens add timer dialog, otherwise, opens timer list dialog
- long-click on it, opens add timer dialog
- on timer list dialog, timer can be edited/removed
- in Facets, added sub-screen for episodes with timers set
- when the sub-screen is opened, old timers are cleared
- further merging common code blocks of EpisodeInfo and PlayerDetails
- some code refactoring