Twitter handle cleanup

Removed the following Twitter accounts because they return 404s

HakeemJeffries
BetooRourkeTX16
SenShelbyPress
USRepJoeWilson (linked from his website but returns 404)

Removed the following Twitter accounts because they were suspended

SteveStockmanTX

Updated account info for

RepPaulTonko (linked from http://tonko.house.gov/ and https://twitter.com/PaulTonko)
SenShelby (linked from http://www.shelby.senate.gov/public/)
SteveWorks4U (linked from http://stockman.house.gov/)