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
#1078 Poll: Multiple voting is not possible. The vote isn't saved.
When the params.ini file isn't here, show correct message
In search results, add link to profile on username
#1056 Use non-minified versions of JavaScript and CSS if minified files
do not exist
#867 Joomla 2.5.5 adds its own options for username & password change
#526 Add Confirmation Box to Restore Default Settings
#526 Add Confirmation Box to Restore Default Settings
Merge pull request #1101 from xillibit/bugs11

#1056 Use non-minified versions of JavaScript and CSS if minified files
Merge pull request #1100 from xillibit/bugs10

In search results, add link to profile on username
Set version to 2.0.3-DEV
Added Kunena Plugin for Smart Search Integration

This Kunena plugin acts as an adapter for the Smart Search Plugin that
handles Kunena content. All it does is triggering the corresponding
Smart Search events before/after a Kunena database object is being saved
or deleted.
Improved Smart Search Plugin for Kunena

+ Now using table class to identify db object, since $context variable
is not consistently set, when category tables are handled

+ Added Access level support, if the corresponding category of a forum
message uses the joomla access level system (and not the joomla.group)
to allow access

+ Only works together with the Kunena Smart Search plugin, which
triggers the Finder events.
#1099 kunena.special.js.php generates Javascript warning errors
Merge remote-tracking branch 'upstream/master' into bugs7