Add revisions dialog (#485)

* Add mock files

Note that revisions-list needs to be called revisions in the reality to be confirm with the API spec, but our mocking solution doesn't allow that...

* Add revisions API calls

* Fix line endings in mock files

* Extend CommonModal to accept size and additionalClasses

* Clarify variable name in API request

* Add react-diff-viewer as dependency

* Add revision chooser modal

* Fix type of route params

* Added and updated mock files

* Added user-icon list per revision

* Added translation to alt text of avatars

* Updated mock file to remove inconsistencies

* Add caching for revisions

* Sort mock file revisions-list descending by timestamp

* Pre-select first/newest revision on first modal open

* Regenerated yarn.lock file from scratch

* Applied requested changes in variable names and line lengths

* User UserAvatar component instead of manually set image

* Move revision-modal-list-entry to own component

* Removed unnecessary return statements

src/components/common/modals/common-modal.tsx

@@ -11,13 +11,15 @@ export interface CommonModalProps {
   titleI18nKey: string
   closeButton?: boolean
   icon?: IconName
+  size?: 'lg' | 'sm' | 'xl'
+  additionalClasses?: string
 }
 
-export const CommonModal: React.FC<CommonModalProps> = ({ show, onHide, titleI18nKey, closeButton, icon, children }) => {
+export const CommonModal: React.FC<CommonModalProps> = ({ show, onHide, titleI18nKey, closeButton, icon, additionalClasses, size, children }) => {
   useTranslation()
 
   return (
-    <Modal show={show} onHide={onHide} animation={true} className="text-dark">
+    <Modal show={show} onHide={onHide} animation={true} dialogClassName={`text-dark ${additionalClasses ?? ''}`} size={size}>
       <Modal.Header closeButton={!!closeButton}>
         <Modal.Title>
           <ShowIf condition={!!icon}>