The option "contents" has been removed from the search bar. This field
is not intended to be used alone, but rather in conjunction with other
fields. Otherwise it may be really slow on large databases.
The "name" option has been removed from the search menu. This doesn't
provide anything better over the "Names" field, that search more
fields, including item names.
Either the width and appearance must be changed to match this of an
`ui action input` or the position must be fixed as done here. It is
not correctly positioned, because the `ui input` class uses a flex.
- Use another external tool to convert pdf to pdf which also adds the
extracted text as another layer into the pdf
- Although not used, the external conversion routine will now check
for an existing text file that is named as the pdf file with extension
`.txt`. If present it is included in the conversion result and will be
used as the extracted text.
- text extraction for pdf files happens now on the converted file,
because it may already contain the text from the conversion step and
thus avoids running OCR twice.
- All errors during conversion are not fatal; processing continues
without a converted file.
A request to cancel a job was not processed correctly. The cancelling
routine of a task must run, regardless of the (non-final) state. Now
it works like this: if a job is currently running, it is interrupted
and its cancel routine is invoked. It then enters "cancelled" state.
If it is stuck, it is loaded and only its cancel routine is run. If it
is in a final state or waiting, it is removed from the queue.
