Merge pull request #69 from Heufneutje/fix-xlines

Various X:line fixes
Merge pull request #71 from Heufneutje/fix-status-modes

Make sure statuses are set before unsetting them and check mode permission
Merge branch 'dev/0.3' of https://github.com/ekimekim/txircd into testing
Merge branches 'module-shun', 'module-oper-sa', 'module-connlimit' and 'module-censor' into testing