Merge pull request #790 from akretion/better-redirect-after-upload

fixes #788 better redirect after file upload
Add optional 'mode' argument to --allow-uploads flag, allowing user to toggle per_page_uploads.
Merge pull request #793 from repotag/flag_for_per_page_uploads

Add optional 'mode' argument to --allow-uploads flag, allowing user to toggle per_page_uploads.
Fixes alignment of tables (issue #700).

Fixes https://github.com/gollum/gollum/issues/700 .
Update sanitization.md

Document customization of sanitation settings; see https://github.com/gollum/gollum/issues/759
Update sanitization.md
fixes bug #786 per_page_uploads: incorrect file path if page is inside some directory