Merge installer changes
Installer: Better directory structure for SQL/PHP
Merge remote branch 'upstream/master' into k30_installer
Remove live update language files after merge
Installer: Start using modal instead of redirect
Merge remote branch 'upstream/master' into k30_installer
Installer: relocate php update files into better location
Remove Joomla 1.5 language manifests
Implement new progressbar based installer
Merge conflicts
Installer: Always enable system and quickicon plugins
Merge remote branch 'upstream/master' into k30_installer

Conflicts:
	administrator/components/com_kunena/kunena.xml
	administrator/components/com_kunena/template/joomla25/tools/default.php
	administrator/components/com_kunena/template/joomla30/tools/default.php
	components/com_kunena/template/crypsis/html/topic/default_message.php
	components/com_kunena/template/crypsis/html/topic/default_message_actions.php
	components/com_kunena/template/crypsis/template.php
	components/com_kunena/views/topic/view.html.php
Fix some misc bugs
Improve new installer popup
Add missing directory to media package
Installer: Add Joomla 3.0 support
Installer: Prevent clicks on modal background in J!3.0
#1480 Crypsis: Click on Category Rss Feed redirect to the home page
Merge pull request #1495 from xillibit/k30_bugs12

#1480 Crypsis: Click on Category Rss Feed redirect to the home page
#1438 K 3.0: We need new language codes in the kunena.sys.ini