RR: remove drop-click:focus on css
RR: cljs dropdown implementation
RR: test init dropdowns, closes #801
WM: z-index of modals vs. submenus
RR: hide open-submenus when other dropdown clicked
Merge pull request #869 from onaio/801-fix-delay-clicking-dropdown

801 fix delay clicking dropdown
WM: Added media list on dataset page
WM: Upload button added
WM: List-images for media files
WM: Non-highlightable dropdown menus; closes #739
WM: Accordion togglers, open/closed state
WM: Closed stated hides content
WM: Sideblock and accordion max-heights
WM: Responsive heights for datasetnav blocks
WM: Hover state tests, navbar max-width