[Task](portal): Image List Refinement

[TilmanHaupt]

Task Description

Sub-tasks

• Filters should be represented in the url, it should be possible to deep-link/bookmark them
• No rerender of Toolbar on changes of Filters, Sorting, Search
• Fixed bug where sorting filtered out items
• Visibility pill (???)
• Delete -> Overflow menu, single item allowed now
• Item Row should be clickable to go to detail view
• Flickering „Loading More…" should be resolved
• "Show accepted Images" should not be an action, it's a filter (or should be in tabs), as

is „Suggested"