BETA v2.13.9.2

This is a beta release of Violentmonkey (also in WebStore), use it at your own risk.
If you already use Violentmonkey, click Export to zip in settings before installing the beta.

Notable changes:

• show "syntax error?" in popup under failed script names
• set popup height to 100% of the screen in mobile browsers
• speed up importing a backup with many files
• allow manually updating a disabled script
• show "Update" title for successful updates instead of "Error"
• hide toolbar in Firefox Android so it doesn't obscure the item at the edge
• properly inject scripts in other still loading tabs if Violentmonkey popup is currently open in Firefox

Commit log: v2.13.9.1...v2.13.9.2