Merge pull request openwebwork#817 from jwj61/hotfix-keywords

Fix keyword searching

Merge pull request openwebwork#697 from openwebwork/release/2.12

Release 2.12 Pull Request

Merge pull request openwebwork#695 from d-torrance/remove-pointgraph.…

…save

Remove file PointGraph.save.

Merge pull request openwebwork#651 from openwebwork/release-2.11

Release 2.11 Pull Request

Merge pull request openwebwork#559 from goehle/scrollbug

Scoring Multiple Select Bug

Initial version of 2.10

Final version of release 2.9