Serlo Editor - v0.17.0

• feat(editor): show user a warning in test environments that content might disappear. Thank you @LarsTheGlidingSquirrel in #4216
• refactor: show editor version in DOM through data-editor-version. Thank you @LarsTheGlidingSquirrel in #4215
• fix(edusharing-plugin): use correct import. Thank you @LarsTheGlidingSquirrel in #4214
• fix(edusharing-plugin): not use dangerouslySetInnerHtml & sanitize html to prevent XSS. Thank you @LarsTheGlidingSquirrel in #4213
• fix(editor): prevent creating exercises in multimedia, other exercise, solution. Thank you @LarsTheGlidingSquirrel in #4212
• refactor(frontend): remove revision history loader. Thank you @elbotho in #4211
• fix(exercise): make sure math controls end up in text toolbar not in exercise toolbar. Thank you @elbotho in #4210
• fix(exercise): add suspense to avoid error. Thank you @elbotho in #4208
• refactor(editor): refactor providers, hack last frontend deps. Thank you @elbotho in #4206
• refactor(audio): move privacy wrapper out of editor. Thank you @elbotho in #4205
• refactor(editor): move serlo content loaders out of editor. Thank you @elbotho in #4204
• refactor(course): use a wrapper to inject router into course renderer. Thank you @elbotho in #4203
• refactor(editor): move save modal outside of editor, refactor. Thank you @elbotho in #4202
• refactor(frontend): remove notification settings from save modal. Thank you @elbotho in #4201
• refactor(frontend): remove email notification setting. Thank you @elbotho in #4200
• refactor(editor): move main toolbar / undoredo to editor. Thank you @elbotho in #4199
• refactor(injection): clean code, allow staging for now. Thank you @elbotho in #4198
• feat(image): add new upload code for testing. Thank you @elbotho in #4197
• refactor(editor): add hook for serlo quickbar data, duplicate some code. Thank you @elbotho in #4195
• refactor(article): replace frontend link comp. Thank you @elbotho in #4194
• refactor(page-patners): remove frontend dependency. Thank you @elbotho in #4193
• refactor(injection): move serlo code back to editor & add server endpoint for fetch. Thank you @elbotho in #4192
• feat(blanks): hide exercise task until child plugin is selected, focus child plugin after selection. Thank you @elbotho in #4188
• Deployment. Thank you @elbotho in #4182

Full Changelog: v0.16.0-editor...v0.17.0-editor