Improvements to nicks handling in 'repall' command:
Improvements to nicks handling in 'repall' command:

- Always have the owner of the tweet responding to first in the response
- Never include the user's nick in the list
- Make sure we don't have duplicate nicks

All with the added bonus of avoiding regexing due to Twitter's entities list

bogwonch/rainbowstream,xcellardoor/rainbowstream,motatoes/rainbowstream,jthelin/rainbowstream,oo00spy00oo/rainbowstream,bogwonch/rainbowstream,guilmour/rainbowstream,guilmour/rainbowstream,jthelin/rainbowstream,DTVD/rainbowstream,xcellardoor/rainbowstream,NghiaTranUIT/rainbowstream,lnalex/rainbowstream,oo00spy00oo/rainbowstream,NghiaTranUIT/rainbowstream,DTVD/rainbowstream,lnalex/rainbowstream,motatoes/rainbowstream