Description of problem

In MTA 7.1 only Java and .Net are listed in the `Filter by language` drop down, in the Analysis Set target window.
Other languages like: Go, Yaml, Type scripts, Python, etc are not listed.
This is because these do not have a builtin rule set.

However it is possible to run analysis for these languages, if a custom rule set will be added.
Once added , to run the analysis need to leave the target language untouched (don't pick anything in the`Filter by language` drop down).

To avoid confusion for users who wish to run analysis on these languages,
please add the tool tip message:
"For any other target language, that is not listed, leave the Target language untouched"
besides the existing message "Select one or more target options..." in the Analysis Set targets window.