removed dead code
moved hooks next to function
CORE-6040 added TODO note
CORE-6040 added name to page entry
CORE-6040 moved data-info liberator endpoint logic

The common logic for calling data-info liberator endpoints has been moved to donkey.clients.data-info.
CORE-6040 converted paged-directory-listing to liberator logic
CORE-6040 donkey uses data-info stat gatherer

Donkey's /secured/filesystem/stat endpoint now uses data-info's /stat-gatherer endpoint.
CORE-6040 updated stat-gatherer API doc

Deleted unneeded docs
Merge branch 'dev' of git+ssh://github.com/iPlantCollaborativeOpenSource/DiscoveryEnvironmentBackend into dev