Collapse extra details panels. (Issue #99)

A temporary fix for smaller screens.
Clear episode details when show or season is changed. (Issue #105)
Allow movie export data to be sorted by date added. (Issue #110)
Merge pull request #115 from fyfe/fixes/issue-99

Collapse extra details panels. (Issue #99)
Merge pull request #114 from fyfe/fixes/issue-103

Fix watched marker. (Issue #103)
Merge pull request #113 from fyfe/fixes/issue-105

Clear episode details when show or season is changed. (Issue #105)
Merge pull request #112 from fyfe/feat/issue-110

Allow movie export data to be sorted by date added. (Issue #110)