**Current situation:**
The hastemplate field allows for arbitrary input since there are use cases for this feature like searching for pages that still contain a non-existing template after deleting it. When adding a non-existing template to the search field, there is no indication of whether it exists or not after the tag was created.
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**Task:**
We want to visually convey that the user is adding a non-existing template to their search by marking the text in red like it happens for categories.
Screenshots of the upload wizard's behavior:
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**Criteria:**
[] There is a dropdown that suggests which categories exist, but you can also write your own category name that is not in the drop-down.
[] The tags of categories without a file page have red font.
**Notes**
- We cannot use the category multiselect widget here, but we could look at it for inspiration.