- added `build.lua' script published by Enno.
Merge branch 'master' of git://github.com/eressea/server
Merge branch 'master' of git://github.com/eressea/server
Merge branch 'master' of git://github.com/eressea/server
Merge branch 'master' of git://github.com/eressea/server
added missing case for `AT_DRAIN_EXP' (bug 1514).
added assert that triggers if a unit has no faction.
Merge pull request #1 from hochl/master

Mentoring session