Initial paging support and associated test
Merge branch 'develop' into feature/paging

Conflicts:
	src/ggrc/services/common.py
Cacheable now has a findPage method that will retrieve the first page of
a collection. Also, fix a string issue in the services in how paging
lings were generated.
Merge branch 'develop' into feature/paging

Conflicts:
	src/ggrc/services/common.py
Now with a "View More" button on the Event list in the admin view that
uses the paging api.
Cleanup bad file.
Set default page size to be 20 and max page size to be 100.
Merge pull request #324 from reciprocity/feature/paging

56553744 Add support for paging in the services for any collection. Use the