Refs #401, No longer to give users the ability to create custom lists
 - Commented out the ability to create new lists
 - Removed all not default boards and pins and categories related to them. Depends on db_boards_cleanup.sql
Removed another possibility to create a list
Added API method to query boards related information: pin ids, board description, board name and id,
by given username and board name. Refs #402
Added method which renders board (list) individual page, by username and board name, refs #402