3714: disable submit button until problem description is entered.
Merge branch 'master' into 3714-report-issue-issues
3714: update tests to verify that the send report button is disabled until problem description is entered.
Merge branch 'master' into 3714-report-issue-issues
3714: minor updates from review feedback
Merge branch 'master' into 3714-report-issue-issues
closes #3714
Merge branch '3714-report-issue-issues'