add gallery item info button & config
Merge branch 'master' into feature/gallery
add gallery-info ns, config & routes, add module in app ns, migrate loader-html & item-asset-url into common ns, update html
add format-time, refactor format-date-time
add timeline & version thumbnails to gallery-info ns, add module config, add LESS styles
update gallery info page layout & config, update /ancestors handler to return only approved items in chain
remove obsolete media queries
update module headers
refactoring cljs api-route handling to allow passing args
bugfix ancestors api route
add/update object ancestor/descendants/root graph queries, refactor 404 responses as missing-entity-response fn
add /update-asset-urls task queue handler
add /update-asset-urls task queue handler
Merge branch 'master' into feature/gallery (accidental rebase gone awry)
refactor api routes config map structure, add :object-graph api route
update object-descendant-graph to wrap root node in vector
implement canvas based branch visualization for object revisions, disable parent-id check for "details" gallery button
refactor object-ancestor-chain
rewrite branch visualization using SVG, update styles & media queries (to resize thumbnails), minor update gallery-item
update media queries for revision browser