[INTERNAL] add task classes

Replaced DecompressTask with DecompressArchiveTask and adapted it for
IProgressMonitor. CreateProjectTask is moved to intelliJ package.

Change-Id: Ieedb7e29091c446378e126b178b4031afc7f1e10
Reviewed-on: http://saros-build.imp.fu-berlin.de/gerrit/1703
Tested-by: Jenkins CI
Reviewed-by: Franz Zieris <zieris@inf.fu-berlin.de>