Tidy up mainframe (creating a new dialog class).
Fix OptionalJSpinner having an excessive border.

Fixes issue CLIENT-66
Fixes issue CLIENT-2

Change-Id: I450fe4a6060988843caad0b22a1ac2ffad9e4c28
Depends-On: If58397d37b89c8fe6e099c47fb4d26fdc4589b49
Reviewed-on: http://gerrit.dmdirc.com/1630
Automatic-Compile: DMDirc Local Commits <dmdirc@googlemail.com>
Reviewed-by: Chris Smith <chris@dmdirc.com>

Change-Id: I052f46c59cfb19b64afbcaf2fbc02b17d1f40da6
Reviewed-on: http://gerrit.dmdirc.com/1633
Automatic-Compile: DMDirc Local Commits <dmdirc@googlemail.com>
Reviewed-by: Chris Smith <chris@dmdirc.com>

Fixes CLIENT-87

Change-Id: I7684eb14f330ee46ed57fd764f5794b1c948672b
Depends-On: Id9d28d2db1f9f972b841f372f322a0968132600d
Reviewed-on: http://gerrit.dmdirc.com/1608
Automatic-Compile: DMDirc Local Commits <dmdirc@googlemail.com>
Reviewed-by: Greg Holmes <greg@dmdirc.com>

Change-Id: I3e9a50431efa92688b97a7474e1ab6eb04e13e9e
Reviewed-on: http://gerrit.dmdirc.com/1497
Automatic-Compile: DMDirc Local Commits <dmdirc@googlemail.com>
Reviewed-by: Chris Smith <chris@dmdirc.com>

Fixes issue 2179

Change-Id: I4586bd633728e29131a2f59155da7d7d2f920aea
Reviewed-on: http://gerrit.dmdirc.com/1487
Reviewed-by: Chris Smith <chris@dmdirc.com>
Automatic-Compile: DMDirc Local Commits <dmdirc@googlemail.com>

Change-Id: I3ef841fa8757318770c9519cbc7595a0304e6847
Reviewed-on: http://gerrit.dmdirc.com/1418
Reviewed-by: Chris Smith <chris@dmdirc.com>
Automatic-Compile: DMDirc Local Commits <dmdirc@googlemail.com>

Change-Id: Idfb8db25bbc7d0d9ba8f7233f2fa59b4e6c44924
Reviewed-on: http://gerrit.dmdirc.com/1333
Automatic-Compile: DMDirc Local Commits <dmdirc@googlemail.com>
Reviewed-by: Gregory Holmes <greg@dmdirc.com>

Change-Id: Ia5fb799a514aa47cbd3c407c42b3a149b147ae44
Reviewed-on: http://gerrit.dmdirc.com/1251
Automatic-Compile: Shane Mc Cormack <shane@dmdirc.com>
Reviewed-by: Shane Mc Cormack <shane@dmdirc.com>

Change-Id: I8d60d7dd048915a173a9c566a58260ac4cb8f1db
Reviewed-on: http://gerrit.dmdirc.com/1117
Automatic-Compile: Gregory Holmes <greg@dmdirc.com>
Reviewed-by: Gregory Holmes <greg@dmdirc.com>

Rework selection behaviour in the inputfield and the textpane.

Change-Id: Ie6cec6c1885124ba3e96b549fdfb86fcf76edcf5
Reviewed-on: http://gerrit.dmdirc.com/1013
Reviewed-by: Chris Smith <chris@dmdirc.com>
Automatic-Compile: Gregory Holmes <greg@dmdirc.com>