Various fixes

- Fix the regex checker in the style config
- Lower the restrictions on the type params in the style config: Having
  a type param that is longer than one character is valid for
  readability
- Rename the config file to something shorter
- Upgrade the twitter libraries to the latest verions
Update tutorial with .jar instructions

- Include instructions in the tutorial for how to create and run a jar
  file from the maven project
Put MaskCancelFilter on couch client

Put MaskCancelFilter in the couch client so if a load balancer drops
our connection the error caused (some Finagle thing) does not crash the
entire service