Use HttpRequestAsyncTask in WebDataBrowser.
Merge branch 'master' of https://github.com/tombul/xml_2013
Use new convenience methods in all parsers. Remove some dead code here
and there ...
Merge branch 'master' of https://github.com/tombul/xml_2013

Conflicts:
	src/fu/berlin/de/webdatabrowser/webdataparser/BasicParser.java
	src/fu/berlin/de/webdatabrowser/webdataparser/WebDataParser.java
	src/fu/berlin/de/webdatabrowser/webdataparser/XMLParser.java