Fix using correct language in search

That must have gotten lost when the searching functionality was externalised.
Fix global legends to work with subdirs

I feel like doing this the third time! Is there some magic hole where my commits drop out of? Do I live in a world with loose bounds to reality only? Is it YOU? I know it is, stop deleting my commits!
Config option to ignore empty legends when saving

This is an ugly hack neccessary because some servers drop requests as they please. This may lead to deleted legends and consequently to irritated users.
With this hack enabled, legends cannot be emptied anymore. Not nice, but when your website dwells on an unreliable server this is a small issue.
Merge branch 'master' of github.com:aquaverde/aquarius-core
take the trash out