Set theme dependent action icons in episode details.
Use Sherlock.Light as base for light theme.

- Also remove default action bar shadow.
Use established naming scheme for light version of icons.

- Use _inverse suffix instead of _light.
Light variant for check in action.
Light variant of add show icon.

- Also remove refresh icons form update actions in shows section.
Light variant of filter icons.
Update light check box icons, add high res variants.
Drop remaining mdpi resolution assets.
Update check box icons for default theme as well, add xxhdpi variant.
Add light variants of icons in overview.

- Also rename menu files to be in line with class files.
Light variant for add all icon in add show section.
Fix light icon in check-in activity.
Light variants for all list icons.

- Added light variant of add list icon.
- Added drawableList attribute, use it when displaying empty list and
action bar icon.
Light variant icons in movies, stats and cloud setup.
Light variant of nav drawer.

- Also fix invisible active item text.
Aaaand finally: light confirm icon for widget config activity.
Merge branch 'light-theme-menu-fix' into beta