Bug fixes

switched the includes to modules which need to be enabled now. this allows for module_invoke functions.

other various bug fixes by robertDouglass, sirkitree, and katbailey

pretty much just adjusted postgres install. since i don't use it, i have to take users' words that it works.

All fixed from 1.1 (http://drupal.org/node/196139) plus:
The .js file was not correctly updated. now its fixed

Bugs fixed:
* PHP E_ALL code compliance
* #165999
* #168137
* #172844

Misc:
* Drupal code standards compliance

Fixes translation issues

Fix the redirection issue once and for all. There's only one "delete" menu path now that works with the "destination" attribute, which should perform a tad better and enables better usage of the temporary_invitation_overview() function for themers.

I think this will be the final 5.x-2.0 version, I'm really satisfied with it now. If no further bugs show up, I'll re-release this as 5.x-2.0 in the next few days.