add multiple UId search capability

Change the QString searchText ivar to a QStringList
and allow for multiple UId search criteria using a
comma separated input string
implementing multi search selection

When the select interview dialog closes, all selected images
will be loaded from Opal.  The first interview is assigned the
active interview and its images are downloaded but the InterviewWidget.
bug fix: handle contra-indicated exams

The logic test for HasImageData was missing the
case for exams having NotApplicable as a status which
in Opal/Onyx terms means the exam was contra-indicated
fix patch versioning

When committing a bug fix directly to qa branch, do not
increment the patch version right away.  This way, one
can do git log to get the commit hash for the fix and
apply it as a cherry-pick on the develop branch without
changing any version numbers in develop.  After the cherry-pick,
go back to qa AND THEN change and commit the patch version.
minor simplification of iterator names
make comment a TODO
remove unused code
add save image functionality

add a menu action to save the current slice
in the image viewer to a png, pnm, bmp, jpg, or tif file
SSL fixes

- remove certificate
- remove SSL version 3
Merge remote-tracking branch 'origin/develop' into qa