re-adding SimpleTextExporter, fixes #58
refactor CountThread to Callable and store the last tasks
preparations for using the AsyncResource (Jersey) and the Refresher
get count and matches with new asynchronous REST API
improved error handling
allow to cancel query in GUI (does not work in service yet) and wait maxmimal 1 second for query validation in order to be more stable
updating jersey and jetty dependencies
do not give the user to cancel the query on client side, only disable the "Show Result" button

also clarify the meaning of "cancelQueries()" in javadoc and make it private to avoid mis-use
Merge pull request #94 from thomaskrause/queryrefreshcleanup

Use asynchronous REST client
scroll to first selected corpus if programmatically selected
do not show "not logged" in after reload
a little bit nicer "help us" window
metalevels available
Allow also empty namespaces in docmetada.
Transfer some more metadata, as value, corpusNam etc.
Added a new method to query service for quering all annotations of a corpora,
including the subcorpora.
Put the document annotations into the right order.
Listing all metadata for corpora and documents is to slow, but is sorted.
AExpose a query for all document names of a toplevel corpus.
Load document annotation only for a selected document in the corpus browser.