Fix changing title depending on drawer state.
Change files list to use grids on tablets.
Add additional navigation drawer availability check.
Add metadata API implementation.
Add file metadata loading task.
Add basic UI interaction for metadata.
Fix empty metadata handling.
Change file and its metadata association.

Should fix sorting issues.
Remove metadata loading for non-video files.
Change metadata layout to auto fit columns.
Remove unused resources.
Fix saving files state.
Change metadata loading to be dynamic.
Merge branch 'metadata-dynamic-loading' into metadata-support
Merge branch 'metadata-support' into tablet-optimizations
Merge branch 'master' into metadata-integration
Remove title showing for metadata content.
Fix view holder usage.
Change files browser to filter metadata files when necessary.
Merge branch 'master' into metadata-integration