Text selections format
Merge remote-tracking branch 'upstream/master'

Conflicts:
	dataset/rest/src/main/java/edu/dfci/cccb/mev/dataset/rest/configuration/DatasetRestConfiguration.java
Merge pull request #719 from apartensky/master

Import Page - moved 'Files' tab to the left pane
Merge pull request #718 from lev-kuznetsov/master

Selections text format
Switched KMeansTextMessageConverter to KMeansTsvMessageConverter to have it downloaded instead of opening in the browser
Added download button for selection list
Added download button to OpenRefine annotations
Minor text change: added arrows to tcga import samples/rows buttons
Added 'save image' button for HCL tree