62264: Grouped logical entity types together into separate modules

...item-page/edit-item-page/edit-item-page.routing.module.ts

src/app/+item-page/item-page.module.ts

src/app/app.module.ts

...s/journal-issue/journal-issue-list-element.component.html

...s/journal-issue/journal-issue-list-element.component.scss

...ournal-issue/journal-issue-list-element.component.spec.ts

...nts/journal-issue/journal-issue-list-element.component.ts

...journal-volume/journal-volume-list-element.component.html

...journal-volume/journal-volume-list-element.component.scss

...rnal-volume/journal-volume-list-element.component.spec.ts

...s/journal-volume/journal-volume-list-element.component.ts

...list-elements/journal/journal-list-element.component.html

...list-elements/journal/journal-list-element.component.scss

...t-elements/journal/journal-list-element.component.spec.ts

...m-list-elements/journal/journal-list-element.component.ts

...ies/item-pages/journal-issue/journal-issue.component.html

...ies/item-pages/journal-issue/journal-issue.component.scss

.../item-pages/journal-issue/journal-issue.component.spec.ts

...ities/item-pages/journal-issue/journal-issue.component.ts

...s/item-pages/journal-volume/journal-volume.component.html