Fixed the middleware. Now checks if ?metadata is in request
Will pass on the request if it is not there
Returns 400 for not ?metadata=v1
And returns 200 OK for ?metadata=v1
Added some parsing for parameters.
Can now take in attributes/query/sorted
Can convert attributes and sorted to lists
query will have to have special parsing since
      the format is complex
Merge branch 'master' of https://github.com/ucsc-hp-group/swift into osms-middleware

Conflicts:
	swift/common/middleware/metadata.py
something happened but i dunno
Preparing to merge middleware changes
Merge branch 'osms-middleware'
Merge branch 'master' of https://github.com/ucsc-hp-group/swift
Merge branch 'master' of https://github.com/ucsc-hp-group/swift
Merge branch 'master' of https://github.com/ucsc-hp-group/swift
fixed python errors in sendata. Sending request still not working