[REFACTOR] renamed ProjectSelectionWizardPage

Actually you can select resources(which can be projects) but not only
projects.

Change-Id: Ic6172a07bb91be47505921d72c199ee7c371ef74
Reviewed-on: http://saros-build.imp.fu-berlin.de/gerrit/1167
Tested-by: Jenkins CI
Reviewed-by: Stefan Rossbach <srossbach@arcor.de>