Merge pull request #47 from thehyve/london_hackaton

Merge thehyve/master changes after April (London Hackaton)
retargetting version number for dependencies
TMART-63 - Across Trial code. This doesn't include the interface work that will need to be done to incorporate the tree somewhere in the interface.
Targetting RModule 0.4 from yesterday's merge.
TMART-63 - Finally getting Across Trial tree code into London Hackathon branch. Broke the DSE Tree style because it used to be a TabPanel, not just a tab.
Merge branch 'london_hackaton' of https://github.com/transmart/transmartApp into london_hackaton
Move gwas classes to it's plugin.

Also remove SearchKeywordService duplicate