moved template menu items to new "select from template" menu
added open personlization file dialog menu
fixed wrongly resetting personalization if selection by file dialog is
aborted
modified handlers to use EPartService and getObject() method instead of
direct singleton access to PersoSimGuiMain
renamed object model parts to better reflect actual purpose
continued renaming elements to better and consistently reflect their
actual purpose
Merge pull request #41 from slutters/loadFileDialogForPersonalization

Load file dialog for personalization