* Remove all use of Strings in favor of the parser's static final int's
* Strings remain in Tags for debugging output only
* Renamed lots of classes to be more consistent
* Centralized logging behavior in Eas class
* Found and fixed some bugs in the process:
- Account deletion wasn't removing HostAuth's correctly in the trigger
- Adding a second EAS account was trashing the first one
- Fixed looping sync behavior caused by Exchange 2003 bug
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