Add new tab on movie page to display watched state

[mregni]

Add a new tab on the movies page to display watched state of a movie. On this page, a user can find movies that are never viewed as well. Also, add a filter on Emby user.

• [ ] Create new tab and list a paged movie list
• [ ] Add sub list with all views
• [ ] Add Emby user filter

Issue created because of #827

[mregni]

#825 (just for reference)