dugbugoffice2,
one note: emptying webappsstore.sqlite and setting it to read-only may cause some websites not working.
For example, Twitter.
You need to make webappsstore.sqlite writable, run such a site and only then set this file to read-only (not clearing content).
Such a way makes Twitter (or other sites, which need to write into webappsstore.sqlite) working properly and at the same
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