Restructure to standard maven/gradle layout.

This didn't need changing in the first place :(

Stop swimming against the tide and accept what most of the rest of
the world does.

While it adds an annoying depth to the actual source code, it makes
the root directory nicer (no more 'test-res' dirs), means we don't
have to override the gradle config, and makes it nicer to work in
IDEA 2016.1.

Change dependencies after parser group change.

DMDirc/Parser#23

Update dependencies.

Add ability to hide nick change events in the jpq plugin.

Closes #428

Hide away label on server reconnect.

Close #426

Random unhandled exceptions are our fault.

Closes #681

Fix logging plugin's handling of self query events

Log entries should always go to the file corresponding
to the Query, rather than to the user that happened
to send the message.

Closes #430

Fix HistoryWindowTest.

Fix ConnectionHandler check.

Comparing an Optional to a Connection doesn't really work.

Fix a couple of tests.

Add source checks for eventbus handlers.

In preparation for child eventbusses being removed, anything
trying to subscribe to specific windows now needs an explicit
check.

In the process, fixed two issues:

- channel who plugin was sending way too many requests - each
  connection was querying every channel in the client. i.e.,
  with 5 servers open there'd be 5 WHOs per channel...

- ServerFrame stops itself listening when *any* frame is closed.
  So closing a channel window then reconnecting wouldn't offer
  an SSL dialog, because it's already unbound the listener.

Issue DMDirc/DMDirc#662

Random test tidying.

Support for core changes.

Fix date format when showing errors.

Closes DMDirc/DMDirc#661

Handle core date API changes.

Update gradle to 2.11.

Update DMDirc repo to HTTPS.

Convert events to use new date APIs.

Java 8 introduces a sane API for dates; to store datettimes
we should now be using LocalDateTime.

Update plugins after core event changes.

Separate InputModel functions from FrameContainer.

Remove input methods from WindowModel.

Migrate all users to using the InputModel.

Remove FrameContainer parent/child fields.

Remove usages of FrameContainer window methods.

These will be going away shortly.

Remove unused methods/fields.

Migrate DCC plugin to use events.

Migrate debug plugin to showOutput/showError.