Updateable Bookmark Tags

So now you can update bookmark tags.
Removeable Bookmarks

You can now remove bookmarks by pressing the delete button.
Correct Dates and user_id

there's a simple little script for making a new bookmark now. It also adds the correct user_id (the one that's signed in) and the current date time int.

database installation changed to reflect this.
Fixing Title Change Error

When you changed the title it was causing an error.
Bookmark Modifiers Check Login

If you're modifying any of the info in the bookmarks database it'll check if anyone is logged in first.