UI: Add Sigma.js library to app
UI: Add CSS for Sigma.js
UI: Add tabset/tab directives for tabs with lazily-loaded content
UI: Add SigmaJS-generated graph within tabbed viz pane
UI: Update CSS for horizontal and vertical tabs
UI: Update tabset directive for horizontal and vertical tabs
UI: Add outline for community detection panel
UI: Change directory structure for panel layout
UI: Move analytics progress bar into directive/partial
UI: Add initial community detection pages
UI: Update colors for D3 nodes/edges
UI: Import fonts locally
UI: Update styles for Community Detection
UI: Add placeholder function to test if CD algorithms submitted/complete
Merge pull request #142 from kylef-lab41/pr-communityform

UI: Add placeholder function to test if CD algorithms submitted/complete
Merge remote-tracking branch 'lab41/master' into TESTMERGE

Conflicts:
	src/main/webapp/css/app.css
	src/main/webapp/css/less/app.css.less
	src/main/webapp/css/less/panels.css.less
	src/main/webapp/css/less/ui-colors.css.less
	src/main/webapp/js/directives.js
UI: Complete merge with upstream
Merge pull request #143 from kylef-lab41/pr-communityform

Completion of upstream merge
Initial help pop text
Added help text for community metrics