Add a basic operator actions menu in whois dialog

[mkromar]

• Move notification title into strings.xml
• Add a basic operator actions menu in whois dialog

This pull request adds a basic operator actions menu in the whois dialog.

It covers all of the features requested by #82 and #262, except for ping, which would be simple to add if needed.

[MCMrARM]

Can you post a screenshot?

[MCMrARM]

Code-wise this PR is mostly fine (althrough it would be better to not use hardcoded indexes in the string list; IMO it would be better to build the list from Java; also probably would be best to move hostname before away in setUser), so if it looks OK I can merge it.

[mkromar]

Sorry for the late reply, somehow I missed the email.

Here's a short video showing how it looks/works.

I went with the hardcoded list as it was the easiest way to quickly prototype it, but I agree that it's not the correct way to do it.

Another thing I noticed is that it would probably be wise to check mChannel and mNick in executeAction(), even though I haven't noticed any problems while using it.

I'll update the PR when I have some more free time.