Bug: Periods not allowed in task name

[rclough]

Periods apparently aren't allowed in the task name. This should either be checked by JS on the front end, or at least we should have more intelligent error reporting around it.

Error from stderr:
The dotted field 'Name with.period' in 'dependencies.Name with.period' is not valid for storage.

[rclough]

after a hard refresh it appears the job gets added but it causes errors on all further commands, haven't tested for other issues.

[thieman]

I'm guessing this only affects the Mongo backend, but we'll need to protect against periods regardless to keep things consistent.

[rclough]

Confirming this is just with mongo