[connectionagent] Tweak connection dialog behavior

Silently fail the request if no services of the requested type is found.
Fix for building tst_connectionagent in non-default location
Merge pull request #89 from monich/tst_connectionagent

Fix for building tst_connectionagent in non-default location
Merge pull request #90 from monich/connectToType

Tweak connection dialog behavior
Bumped version to 0.11.24