a11y-profile-manager: backport nabia's changes to a11y-profile-manager 9.0

• Applied c0f25322 - show a11y indicator when a11y is enabled
• Applied 4ec37d90 - Fixes issues starting orca

Source Build SUCCESS

Results available at: https://jenkins.trisquel.org/job/gitlab-merge-request/923/

Note, this comment only means that the source build was successful, to know if the binary build was successful please check https://jenkins.trisquel.org/job/gitlab-merge-request/923/promotion/

closed