Change IDEA build scripts.

Change-Id: I0029e3333815461acbbb4917e1c88a05ee6f5d73
Reviewed-on: http://gerrit.dmdirc.com/3929
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Chris Smith <chris@dmdirc.com>
Update submodules: plugins (new commits)

plugins:
    136fc81 Greg Holmes <greg@dmdirc.com>
            Fix, probably, buggy ActionTableModel.

            Gerrit: http://gerrit.dmdirc.com/3930

Change-Id: I1bb0deeea15c8ee022ac1d6c37481498be7f5e08