Add back missing control-c registration

[ascandella]

Looks like this was accidentally removed in #445

[rebornix]

LGTM. This might happen as Git Diff looks always weird when adding new actions.

[ascandella]

Yea, this is what the diff looks like for that PR:

You can see ControlC is now orphaned without a decorator (is that what they're called in TS?)

[rebornix]

Yup, that's Decorator and @johnfn said we had some problems with it and that's why we have to put every command in one single file.

See image above, if we add a new command starting with @RegisterAction, Git will not treat the first line as add, instead it will make the @RegisterAction after your change as add, which is weird to me and sometimes I revert the last line by mistake.

[jpoon]

Thanks @sectioneight for the fix