1102 Make it possible to delete images within storybook chapters

[tomaszsmy]

Closes #1102

[codecov[bot]]

Codecov Report

Attention: 15 lines in your changes are missing coverage. Please review.

Comparison is base (5f0f06c) 13.73% compared to head (3cd8018) 13.81%.

Files	Patch %	Lines
.../storybook/chapter/StoryBookChapterController.java	25.00%	6 Missing :warning:
...t/storybook/chapter/StoryBookChapterComponent.java	28.57%	5 Missing :warning:
...book/chapter/StoryBookChapterDeleteController.java	0.00%	2 Missing :warning:
.../paragraph/StoryBookParagraphDeleteController.java	0.00%	2 Missing :warning:

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #1610      +/-   ##
============================================
+ Coverage     13.73%   13.81%   +0.07%     
- Complexity      453      456       +3     
============================================
  Files           257      259       +2     
  Lines          8503     8512       +9     
  Branches        881      880       -1     
============================================
+ Hits           1168     1176       +8     
  Misses         7284     7284              
- Partials         51       52       +1     

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