Give the profile module the possibility to change the profilelink.
Fix typo
Merge ajax.php into index.php

This is quick and dirty.
ajax.php -> index.php and add &type=ajax to all Ajax calls.

type is supposed to be a compulsory argument now, but hadn't refactored 1.3
to comply.
Patch in Symfony2 Request object for forward compatibility.
Refactor for forward compatibility.
Usability.

Returning a variable from an include allows IDE to pickup the included variable in scope.
Add BC detection during init.
Add request to front controllers.
Update changelog.
Add method forward compatibility for Event and Hook system in 1.4
Backport autoloader from 1.4
Path simplification for plugins.
Backport part of the Zikula_Event interface to give some forward compatibility.
Better forward compatibility for controller methods.
Backport PHP and locale assets from 1.4
Backport resources spec from 1.4 in View.
Fixed missing path.
Removed tests.
Small forward compatibility bug fix.