UK: _notes is stored as a dict export as a string, close #384
UK: use sorted records for test
Merge pull request #388 from onaio/384-xls-export-error2

fix  TypeError: sequence item 0: expected string, dict found
RR: add project share doc
RR: return users with permission to xform
RR: return users with permission to project
RR: return users with perms for forms
RR: get user with permission for projects
RR: fix project test filter by owner permissions
RR: fix test filter xforms by user