[patch] Group pi1 items by the first character
The attached patch to pi1 makes you able to group items according to the first character of each tag. This allows to build an index-like taglist like in the attached snapshot.
Unfortunately, the current version of tagpack I'm running is based on SVN plus a number of other patches I have added, thus it is not easy for me to build a patch file that can be used directly including only the group patch I'm now writing about. Therefore, the attached patch file is descriptive: it says where some lines must be added/removed/replaced in the class.tx_tagpack_pi1.php file, but you will have to do the changes by hand.
I have also added a number of TS options in order to configure the taglist. An example of the TS setup is attached.