Fixed grammar/vocabulary and improved balance Mission 7: Added more pickhammers so that it's harder to run out of them, added more weapons to the AI Mission 6: Removed reset possibility, added sticky mines, more weapons for AI every six turns Enter commit message. Lines beginning with 'HG:' are removed.

fix for issue #293 : "rope stuck after picking crate"

fix a segfault related to tcp servers deleting themselves without removing themselves from the internal server list first. (e.g. happens if game fails to start due to missing hwengine binary. a second start attempt will lead to a segfault, even if you correctly install the binary.)