JIRA: MA-147

This reverts commit fb6579abfdb6fc9fb8bc9233554ff5c6e9215659.

JIRA: MA-147

[LMS-2757]

  Query params with a value that starts with /static should have their values converted to the full location.
  Query params with a value that does not start with /static should be left unchanged.

This commit updates common/djangoapps.

These keys are now objects with a limited interface, and the particular
internal representation is managed by the data storage layer (the
modulestore).

For the LMS, there should be no outward-facing changes to the system.
The keys are, for now, a change to internal representation only. For
Studio, the new serialized form of the keys is used in urls, to allow
for further migration in the future.

Co-Author: Andy Armstrong <andya@edx.org>
Co-Author: Christina Roberts <christina@edx.org>
Co-Author: David Baumgold <db@edx.org>
Co-Author: Diana Huang <dkh@edx.org>
Co-Author: Don Mitchell <dmitchell@edx.org>
Co-Author: Julia Hansbrough <julia@edx.org>
Co-Author: Nimisha Asthagiri <nasthagiri@edx.org>
Co-Author: Sarina Canelake <sarina@edx.org>

[LMS-2370]

When a url contains a query parameter it gets incorrectly parsed
when replacing the /static portion.

This fix handles urls with query parameters.

Cleaned up files with muliline imports

Cleaned up files that do not use these imports

Misread comment

- regexp was too complicated, didn't work

- needed for GWT'ed modules that rely on the filename to find dependencies