Related issue:
- https://github.com/uBlockOrigin/uBlock-issues/issues/899
browser.storage.local is now used to store non-critical
local settings.
These settings are all collated under the key
`localStorage`, and vAPI.localStorage is an API to
handle access to these values stored under this key.
vAPI.localStorage.getItem() is still synchronous but
its purpose is to return internally cached values --
this minimizes code changes throughout uBO.
Related issue:
- https://github.com/gorhill/uBlock/issues/3271
When navigating away by clicking another pane tab button,
there will be an embedded warning, which can be ignore
in order to proceed to the new pane, or dismissed by
either clicking on the "Stay" button or anywhere else
in the dashboard.
When navigating away by trying to close the tab, there will
be a built-in browser warning asking for confirmation.
... for the sake of portability.
When including vapi-common.js in an HTML file, then the body element there
will have a "dir" attribute filled with the current locale's direction
(ltr or rtl).
The following languages are considered right-to-left: ar, he, fa, ps, ur.
Everything else is left-to-right.
After the "dir" attribute is set, we can decide in CSS which elements
should have different styling for rtl languages (e.g., body[dir=rtl] #id).
.jshintrc's otion-set is a personal choice, merely a suggestion.
Beside that, it includes some common globals for specific browsers, so
there's no need to set the globals in every .js file.
In order to force strict coding, "use strict" directive was added into
every .js file.
