Invenio-previewer

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- CSV: change JS rendering from `d3` to `papaparse`, supporting rendering
of very large files
- add file size check to CSV extensions
- refactor XML and ipynb extensions

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- encoding: cleanup detection and override ASCII to default encoding
- txt-preview: enables horizontal scrolling, avoid invalid coding errors and add
option to truncate .txt file preview after `PREVIEWER_TXT_MAX_BYTES`
- pull latest translations

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- remove deprecated flask_babelex dependency
- upgrade invenio_i18n

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- remove inline script - pdf js

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- add translations

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- jupyter: fix previewer of jpynb
- tests: upgrade invenio-db