Merge pull request #174 from elnappo/master

template improvements
fix some issues found by pycharm
added jhass as contributor
prepare adding of zh-cn i18n
fix form name for language selector

(so it works with lang.name that has blanks)
make the pep8 checker happy
update i18n (.po)
update i18n (.mo)
update i18n (.po)
update i18n (.mo)
remove unused template
update i18n (.po)
update i18n (.mo)
use blocktrans trimmed to have better template formatting, simplify blocktrans to trans at some places
update i18n (.po)
update i18n (.mo)
update CHANGES from 0.8 and 0.9 release
update CHANGES
add admin for RelatedHost
forward port security fix from 0.9.1, fixes #177