Added tests for frame.registration and frame.base

Also fixed some minor bugs in those modules.
Merge all changes but the ones for py2.5 from Philip
Fixed a little error in a test for frame.registration
Added missing tests for ejtp.frame
Removes py25 test env from tox
Merge remote-tracking branch 'moritzs/bug65-frame-rework' into frame-renovation
Merge branch 'development' into frame-renovation