Some other minor tidying to Styliser.

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.

Formats defined in YAML can specify 'timestamps: false' to hide
the default timestamp for lines associated with that event.

Closes #633

This introduces a CachingDocument which wraps around an IRCDocument
and allows UI-specific caching of UI-specific styled lines (so, e.g.
the web UI could cache HTML versions if it wanted).

Also adds a delegating message maker and attributed string maker,
which incorporates the old "make a StyledDoc then change it into
an AttributedString" logic found in ui.core.util.Utils.

Hopefully this should mean all the the swing stuff can be punted
into the swing UI. The delegated maker will also allow colouring
of the new events to be done sensibly, I think.

Not sure why we went for String arrays - all lines have a timestamp
and some text. Store this sensibly.

Change-Id: I0f9d7bf81ceaa80891279ffa9ff905691474edb0
Reviewed-on: http://gerrit.dmdirc.com/3805
Reviewed-by: Greg Holmes <greg@dmdirc.com>
Automatic-Compile: DMDirc Build Manager

Change-Id: Icd1b2e56b740d27af85f82563f9eef06f33a1914
Reviewed-on: http://gerrit.dmdirc.com/3698
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>

Change-Id: I7e8052839daa79fa113b89fd0b8c1c892a605b73
Reviewed-on: http://gerrit.dmdirc.com/3122
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>

Change-Id: Id0904867640e49e12fca5c1c7c5b9e72c78e3a1b
Reviewed-on: http://gerrit.dmdirc.com/2976
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>

Change-Id: Idf38f5027a92166daf99039de75b759d47431de1
Reviewed-on: http://gerrit.dmdirc.com/2607
Reviewed-by: Greg Holmes <greg@dmdirc.com>
Automatic-Compile: DMDirc Build Manager

Change-Id: I0d40c3ac86b9e06fad3f29bc36612b4162e54d1c
Reviewed-on: http://gerrit.dmdirc.com/2287
Reviewed-by: Chris Smith <chris@dmdirc.com>
Automatic-Compile: DMDirc Build Manager

Change-Id: I635e0d111ed182713132145e4d5fb1654f776ec4
Reviewed-on: http://gerrit.dmdirc.com/2071
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Chris Smith <chris@dmdirc.com>

Change-Id: I7f63fdd02ea0109fe31e55c44b078edae3862f32
Reviewed-on: http://gerrit.dmdirc.com/1726
Reviewed-by: Chris Smith <chris@dmdirc.com>
Automatic-Compile: DMDirc Local Commits <dmdirc@googlemail.com>

Change-Id: Ia8c864cc8abab3bfdcabeac30b41f6fb29233e73
Reviewed-on: http://gerrit.dmdirc.com/1689
Automatic-Compile: DMDirc Local Commits <dmdirc@googlemail.com>
Reviewed-by: Chris Smith <chris@dmdirc.com>

Change-Id: Icfab1de147645d80a999c3678daf268e7e115066
Reviewed-on: http://gerrit.dmdirc.com/1331
Automatic-Compile: DMDirc Local Commits <dmdirc@googlemail.com>
Reviewed-by: Gregory Holmes <greg@dmdirc.com>

Change-Id: Ica56a194bf436f83e107bdbda6064d590ec785b1
Reviewed-on: http://gerrit.dmdirc.com/1085
Automatic-Compile: Chris Smith <chris@dmdirc.com>
Reviewed-by: Chris Smith <chris@dmdirc.com>