the download button should only be visible when results are present
simplified the expression
continued development (refinement) of the Decoders tab
continued development (refinement) of the Decoders tab
Merge branch 'feature/webui' of github.com:ldaniels528/trifecta into feature/webui

* 'feature/webui' of github.com:ldaniels528/trifecta:
  continued development (refinement) of the Decoders tab

Conflicts:
	src/main/resources/app/js/controllers/DecoderCtrl.js
	src/main/resources/app/views/decoders.htm
clean up
modified to select an alternate schema when the work-in-progress new schema is canceled (deleted)
updated icons