Mobile web projects/Collections Backend

This is a draft space for Collections, spring zero backend spike results

Non-MVP Collections schema draft
Collections table:
 * collection_id ( auto increment )
 * user_id ( index )
 * label
 * description
 * private flag ( default false )
 * timestamp ( time created )

Collection_pages table
 * item id ( auto increment )
 * collection id ( index )
 * page id
 * order ( default 0 )
 * timestamp ( time added )