[Liam W.] Thread Solutions 2.5.0

• Change the system used for the profile solutions tab
• Fix a few bugs

This is a major update, with some significant changes:

• The solution prefix is now independent of the thread prefix - you can have both the solution prefix and the thread prefix apply
  • The solution prefix is now retroactive
• Multiple new permissions
  • Mark solution on others threads
  • Mark own post the solution
    • This is automatically granted on upgrade to those that hold the mark post as solution permission
• The default for new installs is now to default 'Allow solutions' to off
  • There is a query you can run to quickly change this option for all of your nodes
• There is a new node option to allow/disallow multiple solutions
  • This is enabled by default for forums that allow solutions
• New filtering options in the thread list to filter based on solved or unsolved threads

This update includes some bug fixes.

It also includes the ability to disable solutions on a per-forum basis.