Revert "service: create only one thread to handle everything"

This reverts commit a684ef25d4c94eac2b9b06b7fb005d660827dc1d.

Caused a nasty StackOverflow, better revert this and let android
itself handle everything.
profiles: greatly improve the per-app handling

Instead of calling the expansive methods directly on
the fragment creation we should only call it when the
user actually clicks on the small icon.
Because of one previous commit we can afterwards copy
the data to all other profiles and speed up the loading
process quite a bit.

The only bottleneck is now the actual sorting process,
anyway with this change the time taken on a Nexus 4 goes
down to aroud ~1 seconds.

Signed-off-by: Blechd0se <alex.christ@hotmail.de>