Change date 3.4

Change date v2.4 changes:

Now using XenForo functions for performing database updates.

Change date v2.3 changes:

Now using finder for performing database queries.

Change date v2.2 changes:

Fixed issue with changing first post in a thread. Now properly updates the position of the post.

Change date v2.1 changes:

Fixed issue with showing the latest post in the forum list.

Change date v2.0 changes:

Fixed search index variable.

Change date v1.9 changes:

Fixed default search index variables.

Change date v1.8 changes:

Now updates search indexes.

Change date v1.7 changes:

Updated view variable.

Change date v1.6 changes:

Added feature to prevent a future date to be entered.

Change date v1.5 changes:

Added "use current time" link in change date overlay.