Fix typo in treebankPersister

That one got missed during 6cb1060 in #159.
Don't pollute the json with conf info
Refactor in treebankRetriever
Merge pull request #162 from latin-language-toolkit/save_fixes

Save fixes
Limit the zoom scale in dependencyTree
Merge pull request #163 from latin-language-toolkit/zoom_limits

Limit the zoom scale in dependencyTree
Update README
Always minify before starting a server
config for arabic
Make some specific hardcoded changes for arabic
Use remote server for treebank document
Add docIdentifier to arabic configuration
Start to work on directive to handle language specific changes