Disable numeric formatting, remove dead code.

With numeric formatting gone, all output is either added direct
to a window (which will be changed soon) or done through
displayable events. Message sinks are now completely unused,
as they don't affect displayable events.

Issue #426

Improve formatting of whois events.

Add ugly event-based whois output.

This allows events to iterate over a collection property, and
adds formatting for whois results. It needs a lot of tidying,
but it's a start...

Add formatter support for before/after templates.

This allows formats that may be multi-line (whois results,
probably MOTD results at some point, etc...) to show a header
and footer around the actual content.

Couple more deprecation fixes.

Remove most deprecated methods in commands

Deprecate things that should be replaced by events

Move some more formats over to events.

This allows us to remove a fair chunk of the notification
handling functionality in FrameContainer.

Issue 426

Make topics have proper dates.

Tidy up some unused/uncommonly used methods.

I think these will eventually go away entirely, once everything
is event-bus'd, but I'm not entirely sure how that works any
more :(

Minor tidying around displayable events.

Tidying of Server.

Split out error description getting into its own method. Other
minor changes.

Fix weird plugin path construction.

We have a path, it doesn't really make sense to take the filename,
then take the directory, then create a new path using those...

Extract config value retrieving from binder.

The logic to get a correctly typed setting given a class is
pretty general purpose, and will be useful elsewhere. Pull
it out of ConfigBinder and add some tests for it.

Bump gradle version.

Ensure module methods have unique names.

Dagger 2.0 appears to require each method in a module to have a
unique name. In some cases we've used overloads with the same name.

Also, remove a bunch of boilerplate javadoc.

Issue #601

Fix source of notice events.

We were raising notices as all coming from the local user, not
the person that sent the notice. This is... unideal.

Add some mode aliases for unreal.

Add basic test for PluginFileHandler.

Stop TabCompleter depending on CommandManager.

Tidy up plugin refreshing.

Add getPath utility method to JimFsRule.

This saves getting the FS and suffering the barrage of warnings
related to auto-closeable resources.