* _ResourceManager: allow resources to be named anything as long as they
  inherit from the base resource class; gave resources proper names.

* Renamed BaseCommand to Command and BaseTask to Task; applied renames
  throughout earwigbot.commands and earwigbot.tasks.

* Data: refactored argument and command parsing to be completely internal.
  Added docstrings to attributes. Applied changes to Frontend.

* IRCConnection: improved such that we accurately detect disconnects with
  server pings; timeout support. Applied changes to Bot.

* Updated documentation and other minor fixes.

- Category.members() -> Category.get_members()
- Category.get_members() now fully abides by the limit, which defaults
to None for SQL and 50 for the API.
- Category.get_members() always returns unicode objects instead of
strings for page titles.
- afc_statistics: Fixed a frustrating Unicode bug.

* get() -> return a Task instance by name (tasks)
* Using SQL to save API queries. (commands.{afc_report,afc_status})
* ignore_list -> ignoreList in config. (tasks.afc_statistics)