Added explicit error response in case of a period in metadata key name.
Added some documentation of metadata exceptions and metadata in general.
Fixed style errors breaking the pep8 style tests.
Added check for metadata key containing question mark, plus a test.
Send file mime type when downloading
Fixed erroneous error message confusing question mark with dollar sign.
Merge pull request #163 from girder/file-mimetype-download

Send file mime type when downloading
Merge pull request #161 from girder/fix-metadata-key-characters

Fix metadata key characters
Fixing a bug due to improper routing around multiple dialogs
Fixing dialog issue on base page and cleaning up vestigal events.
Merge pull request #165 from girder/login-register-url-bug

Fixing a bug due to improper routing around multiple dialogs
Add a new test case to access the webroot, in order to increase coverage.
Simplified string checking for imports in webroot access test.
Merge pull request #168 from girder/add-webroot-test-coverage

Add a new test case to access the webroot in order to increase coverage.
Merge pull request #158 from girder/refactor-frontend-plugin-builds

Grunt-watch now works for plugin code too
Merge remote-tracking branch 'origin/master' into plugins-extra-static-content

* origin/master:
  Simplified string checking for imports in webroot access test.
  Add a new test case to access the webroot, in order to increase coverage.
  Fixing dialog issue on base page and cleaning up vestigal events.
  Fixing a bug due to improper routing around multiple dialogs
  Fixed erroneous error message confusing question mark with dollar sign.
  Send file mime type when downloading
  Added check for metadata key containing question mark, plus a test.
  Fixed style errors breaking the pep8 style tests.
  Added some documentation of metadata exceptions and metadata in general.
  Added explicit error response in case of a period in metadata key name.
Merge remote-tracking branch 'origin/master' into plugins-extra-static-content

* origin/master: