petra: stop (after some time) to try gathering inaccessible resources (i.e. chicken inside buildings in random maps) + some cleanings

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@16004 3db68df2-c116-0410-a063-a993310a9797
Fix a comment written too quickly

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@16005 3db68df2-c116-0410-a063-a993310a9797
Add wall style for Seleucids in the random map scripts. Currently, Hellenic walls are used. Fixes a bug in the Fortress random map.
Patch by FeXoR.

Fixes #2942, refs #2619.

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@16006 3db68df2-c116-0410-a063-a993310a9797
Change the way we filter out selected entities when we draw a selection box. Add a hotkey to allow selecting only idle units.

Patch by Rolf Sievers, fixes #2407.

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@16007 3db68df2-c116-0410-a063-a993310a9797
petra: avoid updating some no-more-used entitycollections

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@16008 3db68df2-c116-0410-a063-a993310a9797
Properly handle auto-research promotion techs at game start.

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@16009 3db68df2-c116-0410-a063-a993310a9797
Merge 'remotes/trunk'