Checkin: Main Window improvements

I've checked in a set of changes which have significantly changed the look
of the main window, as well as partially tidied up the code in Client.java.

More details in the ChangeLog:

http://cvs.dubh.org/JCVSlet/show/jfreeciv/jfreeciv/Changelog.txt/1.10

and a screenshot of the new main window is here:

http://www.dubh.org/projects/jfreeciv/images/jfreeciv_new_nation_full.png

I'm also working on a script to auto-mail daily commit logs from the cvs
server, hope to have this working some time this week.

Thanks,

Brian

BEGIN:VCARD
VERSION:2.1
N:Duff;Brian
FN:Brian Duff
ORG:Oracle Corporation;Application Development Tools
TITLE:Senior Software Engineer
TEL;WORK;VOICE:0118 92 44901
TEL;HOME;VOICE:0118 9679374
TEL;CELL;VOICE:07712 191939
URL;WORK:http://www.dubh.org
BDAY:19761227
EMAIL;PREF;INTERNET:[email protected]
REV:20010918T232018Z
END:VCARD