CSI improvments, cosmetic message changes and better compatibility with eclipse plugin

Added a few more patterns for the CharsetIssues detector and some other improvements to various messages


Most important, kjlubick/fb-contrib@94f5ca73bf52df485339454270fc09e03b5c15d2 is responsible for allowing the fb-contrib plugin to be temporarily bundled with fb-contrib-quickfixes when launched.  This small tweak makes it much easier to debug/test the Eclipse plugin as you can just launch the plugin, rather than having to build it, fire up a fresh install of eclipse, install the plugin there, restart Eclipse...