Bots: Name is not acceptible

[Oliver]

In case the bot hits some of these:

• Wordfilter
• Is too long (over 15 characters)
• Contains something like: numbers, html (''''^^^*<@ etc.)

It will result with an notification such as this one:

Returning with text

room.error.bots.name.not.accepted

[Oliver]

In case name fails: it returns to latest bot name.

[Wesley]

Added to 1.12.0