Enhancements: import error logs

[Eveltjen00]

It would be an added value if after import the error logs would

1. indicate on which line of the import data file the error occurred
2. be downloadable e.g. as a text file. When the users now click anywhere on the screen, they lose the information.
3. or that there is an user-overview (table) of the imports they ran (name file, name importer sheet, date of import, resulting records) + a link to the error log if there is one. Could be a third tab, below importer list, run import that is named "import log"

We also received the feedback that it is not very clear that the import is finished when having the screen above, so an easy enhancement would be that before the error messages there is a line that states: "import complete!"

We also notice that the usage of "metadata" can get confusing for our researchers, hence should there be new work done on this page, I would suggest to replace the Title "Metadata import processing status" to 'Data import processing status" or "Import processing status"