sass gem fixed at 3.4.1 due to error with Sass.load_paths and bootstrap
2.x gem. Minor tree css change
remove rogue tree pharma route. nest each statements in table for target
components correctly
Merge branch 'develop' into ian_bootstrap_3

Conflicts:
	Gemfile
	app/assets/javascripts/templates/trees/pharmacology.hbs
there is no filtering or tsv for comp pathways at the moment
pathway data in left column