Minor and quick adjustments before going to prod

To put the paleo website back online as soon as possible, here are some minor/quick/easy adjustments made to make the website a bit more tidy. An important point about unwanted files in the ingestion of paleo data: Some files were unknown and therefore unexpectedly ingested in ICAT. They show up in the list of the files for the datasets but make no sense and pollute the list. Filters specific to Paleo data have been set in the process function of the API calls to mask them on the front end. These filters might be removed if a solution is found in the future to delete the unwanted files from the backend.