Plug: Make sure that the entry is in the owners
Fix PEP8 nitpick
Add entry in 'uptodate' at the end of transfer
Save the metadata at the end of the transfer
Referee: Add uptodate to the should_own

When files in A are synced with B and a new file is created in A,
the Referee was not adding A in the new owners. Now the files that
are currently up-to-date are added by default.
This could cause a problem if the rule just changed, we should do
some experiments.
First web API (list and get files metadatas)
bottle in requirements
Add requirements for docs
First draw of the specification of the API. Cf #21
Rename onitu.api into onitu.plug
Moving onitu/webapi to onitu/api
Can get entries informations in API
Fix typo in doc
Enable CORS for the API
cf https://developer.mozilla.org/fr/docs/HTTP/Access_control_CORS
Fix Content-Type in the API