Portable build fix: Install missing roman package.
Fixed #1275 (Creating assignment pdf failed)
Merge pull request #1274 from emanuelschuetze/fix-portable

Portable build fix: Install missing roman package.
Merge pull request #1276 from emanuelschuetze/fix-1275

Fixed #1275 (Creating assignment pdf failed)
Cleaned up some widgets and the base.css. Removed icon definitions.
Merge pull request #1286 from normanjaeckel/CleanUpIcons

Cleaned up some widgets and the base.css. Removed icon definitions.
Renamed 'permission_required' to 'required_permission' etc.

Renamed method and attribute of openslides.utils.views.PermissionMixin. Renamed attribute of widgets and main menu entries. Fixed #1160.
Updated test coverage minimum.
Updated requirements_production.txt.
Merge pull request #1289 from normanjaeckel/UpdateRequirements

Updated requirements_production.txt.
Merge pull request #1288 from normanjaeckel/UpdateTestCoverage

Updated test coverage minimum.
Merge pull request #1287 from normanjaeckel/PermissionCleanup

Renamed 'permission_required' to 'required_permission' etc.
Fix default-slide-preview-url

Fix #1246
Fixed #1235 (DeprecationWarning in utils.views.PDFView)
Fix link to list of speaker item on related items

fix #1242
Fixed #1158 (Clean up assignment.css)
PDF: Add missing 'fontName'.

And set 'registerFontFamily(...)' to use bold/italic in regular paragraphs.
Fixed #1104 (Enable copy/paste in dashboard widgets)
Improved html templates for mobile devices (responsive).

Fixed #995 (Use responsive navbar for main menu in backend template)
Replace own CKeditor with dedicated app