Support stats between tags.

Also:
- Show tags that are being compared for each repo
- Add License
- Add explanation for the script
- Add sample output
Merge remote-tracking branch 'refs/remotes/ivan/feature/fix-script-to-support-info-between-tags' into develop
Add support for Mate's polkit agent.
Merge remote-tracking branch 'refs/remotes/ivan/feature/support-mate-polkit-agent' into develop
fix irc channel name
Merge remote-tracking branch 'refs/remotes/kali/irc-channel-fix' into develop
Use non blocking dialog for Pastebin result

With this change we no longer need to call the dialog with reactor.callLater.
Also removed useless failure.trap

Closes #5404.
Merge remote-tracking branch 'refs/remotes/ivan/bug/5404_pastebin-dialog-blocks-app' into develop
Hide mainwindow on quit and show tooltip.
Add flag to start the app hidden in the tray.

Closes #4990.
update requirements to last unified release
relax psutil version pinning

Closes: #5489
Merge remote-tracking branch 'refs/remotes/ivan/feature/hide-mainwindow-on-quit' into develop
Merge remote-tracking branch 'refs/remotes/ivan/feature/4990_start-hidden-flag' into develop
Merge remote-tracking branch 'refs/remotes/kali/update-reqs-to-unified' into develop
Merge remote-tracking branch 'refs/remotes/kali/bug/relax-psutil-pinning' into develop
Add post limit exception and remove legacy code.
Handle pastebin post limit error.

Closes #5492.
Enable provider widget depending on radio button.

Disable providers combo box during check and enable combo or line edit
depending on radio button.

[Closes #5495]
Hide bandwidth if the openvpn process is killed.

[Closes #5497]