Add Joomla! 3.0 support to installer, remove Joomla! 1.5 support
Make Kunena installable in Joomla! 3.0
Remove J!1.5 language files and manifests
Remove all traces of Joomla! 1.5 support and deprecated JDatabase funcs
Convert some removed classes and functions to the new Framework

* JFactory::getXMLParser()
* JDate functions
* JFTP
* JPane
* JParameter
* Basic Bootstrap styling in the backend
Fix legacy class uses on JRequest, JUser, JConfig, JDate, JDocument

* Rename JRequest::checkToken() to JSession::checkToken('post')
* Rename JUser::authorisedLevels() to getAuthorisedViewLevels()
* Rename JConfig::getValue() to JConfig::get()
* JDocument doesn't extend JObject anymore
* Fix JDate timezone parameter
Joomla 3.0: Rename JURI to JUri and make the calls to be more uniform
Joomla 3.0: Rename JHTML to JHtml
Joomla 2.5: Fix JRegistry issue, stop using JUtility class on mail

* Rename $registry->loadJSON() to loadString()
* Rename JUtility::sendMail() to JMail::sendMail()
Replace Joomla usertype with Kunena type (J!2.5+ doesn't have one)
Add Joomla 3.0 support for KunenaHtmlPagination
Fix #1163: Joomla 2.5: Default topic layout setting has no effect
Fix #1130: Installation: Adding category aliases fails in some languages
Installer: Improve error messages if menu conversion fails (#959)
Merge pull request #1165 from mahagr/merges

Merge with small changes: Remove some others use of CKunenaLink calls
Merge remote branch 'upstream/master'
Fix PHP Notice: Use of undefined constant COM_KUNENA_ERROR_TOKEN
PHP Warning: htmlspecialchars(): Invalid multibyte sequence in argument
Call to undefined method KunenaViewCategory::displayCategories() in RSS
Fix fatal error in Kunena shutdown function