Add various GUI pieces (exit button, resource counts, unit details).
Clean up implementation of button panels.
Split some content out of 'common' and into page-specific files.
Delete some obsolete content.
This was SVN commit r7337.
Merge from 22b478ffed8d.
Pure scripted interface definitions.
Entity creation from scripts.
Improved messaging system.
Messages on entity deletion.
Basic player entities.
Player ownership.
Bug fixes.
This was SVN commit r7281.
Giant merge from
http://svn.wildfiregames.com/hg-source/file/5fb522019d5e
Infrastructure is largely complete, gameplay is largely missing
Disabled by default; use command-line flag "-sim2"
(Second attempt at commit...)
This was SVN commit r7259.
