- first commit for issue #22 - lock exercise and dependent entities (make exercise readonly)

i18n/en.ts

i18n/i18nRoot.ts

src/communicationLayer/exerciseEditorLayer.ts

...lAccessibleExercisesSite/closedExercisesSite/listView.tsx

...tes/allAccessibleExercisesSite/openExercises/listView.tsx

...eExercisesSite/openExercises/openExercisesViaCodeSite.tsx

...isesSite/openExercises/openExercisesViaVisibilitySite.tsx

src/components/sites/doExerciseSite/doExerciseSite.tsx

...rSite/exerciseSettingsPanel/exerciseSettingsPanelView.tsx

src/components/sites/exerciseEditorSite/headerBarContent.tsx

...ents/sites/groupRolesSite/dialogs/changeGroupRoleView.tsx

src/components/sites/groupRolesSite/groupRolesCardsView.tsx

...e/actions/exerciseEditorSite/exerciseEditorCrudActions.ts

...state/actions/groupRolesSite/dialog/groupRoleSetAction.ts

src/state/reducers/doExerciseSite/crud/resetUserSolution.ts

src/state/reducers/doExerciseSite/doExerciseReducer.ts

...ucers/exerciseEditorSite/editorExerciseSiteActionTypes.ts

.../reducers/exerciseEditorSite/exerciseEditorSiteReducer.ts

...e/reducers/exerciseEditorSite/getEditorExerciseReducer.ts

...rciseEditorSite/subSets/lockExercisePermanentlyReducer.ts