Now is possible to omit the "category:" metatag in positive tag searches (mysql only)
removes the "category:" metatag when creating the search links
added tag categories integration to the tag map and alphabetic view, but are still in the same order.
added a previous behaviour to the pool system.
escaped the () symbols to allow them again while still using regexp in searches by tag
fixed double onInitExt function in implications' main.php extension.
changed color to make text more readable
Created a phasher plugin.

It uses the "https://github.com/kennethrapp/phasher" php project to create the image hash,
and stores it in a new column in the image table, but at the moment the matching seems broken.