Round end spam fix
- This ensures that "The round has ended" message is shown only once, instead of being spammed under certain circumstances.
Explode Verb Fix
- Explode verb is now available from round start. This ensures it works properly and won't disappear during 60 second time limit.
- Checks are moved into explode verb itself, so it works exactly as it used to work (read: It won't let you blow up station unless done within that 60s limit after takeover)
- Changed self destruct notifications a little. They now use radio messages instead of "world <<" which was ugly.
- If AI is killed within 10 second self-destruct countdown it is aborted. (Good luck)
Revert "Explode Verb Fix"

This reverts commit a7edc3f39d373f4e921a52ad4c1ef190e614c4ab.
Better attempt to make AI Explode verb fix for malfunction. Should not mess up whole file formatting.
iFail typo fix
Merge pull request #6328 from atlantiscze/malf-explode-fix

Malfunction Explode Fix