More work on IDEA setup.

Make plugins its own module, exclude a load of junk.

Change-Id: I92e2665c42f26bc7b5e87b6e7e2ff43581805f6b
Reviewed-on: http://gerrit.dmdirc.com/3680
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>
Fix URLBuilderTest.

If this is run with the wrong classpath, the test fails as apparently
having a 'test' folder isn't hugely uncommon. Use a less likely name.

Change-Id: I4c8bcb2be8b6768b3247e91d176932e7fac24d2e
Reviewed-on: http://gerrit.dmdirc.com/3681
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>
Simplify some conditionals

Change-Id: I13a00bf966dd5fb333dcdd408602a4b37385f27c
Reviewed-on: http://gerrit.dmdirc.com/3682
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>
Update submodules: util (new commits)

util:
    1d881ab Chris Smith <chris@dmdirc.com>
            Fix some redundent exceptions

            Gerrit: http://gerrit.dmdirc.com/3684

Change-Id: Ibe3e05e01a75c943da64c752dfd20b8048f0f6c5
Update submodules: plugins (new commits)

plugins:
    ec7ff19 Chris Smith <chris@dmdirc.com>
            Fix some oddness.

            Gerrit: http://gerrit.dmdirc.com/3683

Change-Id: I69acaaae26f1904ece130b3c72969ac52e5c4d40