IM: ANDREW YOU MUST FLUSH SESSION SPECIFIC ENTRIES

- Added new column.
- Need to flush the session specific entries on exit of the page.

Notes for when you are making playlist sharing:
Add a column that is of type bool or a single character. If 1=> This is
part of a playlist that has a unique link, so do not fuck with it. If
0=> allow the flushing function to get rid off it.