Single-user mode

 - unison.py: adds /solo url-prefix
Single-user mode

 - solo_views: comments unimplemented methods
 - unison: adds forgotten solo_views import
 - plgenerator: removes old comments
Single-user mode

 - solo_views: FIX solo_views not defined
Single-user mode
 - solo_views: changed generate_playlist method from GET to POST
Single-user mode

 - solo_views.generate_playlist: removes unnecessary with_user constraint in authentication
Single-user mode
 - adds prints to debug
Single-user mode

 - solo_views: removes with_user=True constraint in authentication
Single-user mode

 - solo_views: adds import plgenerator
Single-user mode

 - moves plgenerator to solo_views (for the tests)
Single-user mode

 - FIX 'é'
Single-user mode

 - removes unused import
Single user

  Fix typo
Single-user mode

 - solo_views.plgenerator: now handles options
 - schema.sql: added seeds specific fields in playlist table; removes local field from pllib_entry;
   changed ratings default value to -1
Single-user mode

 - schema: adds a table for top global tags
 - models: adds classes  to match db tables
Single-user mode

 - updates data structures handling for database data
Single-user mode

- adds mock tags for tests
FIX typo
FIX missing storm_table
FIX wrong argument number in list_tags
FIX typo in index creation on top_tag table
Single-user mode

- Updates playlists handling