Improved javadoc.
Switched to lucene-2.2.0.
Refactored.
Added methods indexContent() and deleteContentFromIndex().
Removed task mappings not needed anymore.
Removed.
Initial checkin.
Added EXTENSION_POINT_ID_GROUP_PARTLETS and EXTENSION_ELEMENT_ID_GROUP.
Adjusted element 'taskBack' and attribute 'menuPermission'.