applied patch 0a1cb79ef2034b82d4b5987ed3580388139f3ba8
fixed the creation of writings normdates (part 2)
outsourced parsing of JSON to the expath package xqjson
added index for @class
improved permissions script
made use of new securitymanager functions
made collections 'executable'
permissions again …
fixed context links for diaries
added missing namespace prefixes
suppressed processing of text nodes
eliminated superfluous whitespace
workaround for bug in the image module, fixes #15
performance improvements
set cache-control header for getJavaScriptOptions.xql
some rewriting for better index use
unused index entries removed
some code tidying
fixed wrong XPaths; closes #16
corrected creation of news context