Improved the optimized data retrieval to load the raw data, when there are less points than requested.
Updated the junit tests.
Merge pull request #443 from jbobnar/master

Improved the optimized data retrieval
OpenPerspectiveAction: Unify, update for E4

Update OpenPerspectiveAction to allow use with both E3 and E4 (compat).
Extract PerspectiveHelper from OpenPerspectiveAction.
Move from apputil.ui to ui.util to allow use in opibuilder.
Use same code to show (or reset) perspective in OPI, alarm, scan,
databrowser, ...
Merge pull request #444 from ControlSystemStudio/bug324

OpenPerspectiveAction: Unify, update for E4
Merge branch 'master' of https://github.com/ControlSystemStudio/cs-studio.git