0.8 development branch created
Added separate installation XML for Joomla 1.5

manifest.xml is now for Joomla 2.5 and later, while Joomla 1.5 uses
manifest_15.xml.
Needed for Joomla 3 compatibility reasons.
Removed all usage of DS constant.

Joomla 3 has no DS defined, and since PHP automatically handles / on
Windows machines, it's not needed.
Use JControllerLegacy instead of JController

Joomla 3 needs this change. If no JControllerLegacy class exists, an
alias from JController created first.
Use JViewLegacy instead of JView

Joomla 3 needs this change. If no JViewLegacy class exists, an alias
from JView created first.
Changed behavior.mootools to behavior.framework
Use JModelLegacy instead of JModel

Joomla 3 needs this change. If no JModelLegacy class exists, an alias
from JModel created first.
Removed JRegistry->getValue calls

Config is now converted an array, that method seems across all Joomla
version between 1.5 and 3.0
Removed JDate->toFormat calls
RaidPlanner helper now loads Mootools in the appropriate way depending on Joomla version.
Mootools are now loaded with Mootools-more when needed.

Also loadJSFramework now called from the display method.
Added Options button to the Groups page, if Joomla ACL is used.
Autorepeat now shifts invite time too.
Made some work on extended tooltip in calendar view.
Calendar extended tooltips are working

But it needs some more polish, and untested under J1.5
Added transifex configuration.
Transifex client configured.
Added Transifex localizations.
Changed ToolbarHelper X functions to the normal ones.

editListX, and addNewX are not supported in Joomla 3.
Added scriptfile for installation

Needs to check in Jooml 2.5 to avoid double call of installation
routines.
Modules have 2 manifest, one for Joomla 1.5 and one for modern (>=1.6)
Joomlas.