(cherry-picked from 383ab454725d9bf8d01392a587c8a2c0c2116294)
(Closes #2429)

This commit is related to d5115715

[FIX] website.editor: need to set the range on start because the browser can be lost the caret and can't insert the media in the page.

Avoids 2 rendering passes, and allows editing e.g. events detail page, which
couldn't be done (due to groups=public in a mail component)

fixes #1994

The feature was broken due to an incompatibility
when forward porting 624f256f and a78e27fc

Automatic Cookie Domain Configuration simplifies cross domain tracking implementations by automatically writing cookies to the highest level domain possible when the auto parameter is used. When used on the domain www.example.co.uk, it will try to write cookies in the following order:

co.uk
example.co.uk
www.example.co.uk
Analytics.js will fail to write a cookie on co.uk but will succeed on example.co.uk. Since a cookie was succesfully written on a higher level domain, www.example.co.uk will be skipped.

I think we could get rid of the .trim() calls (for performance sake)
but I don't want to break anything so I'll leave them.

Split the ternary field application in active and show_customize, all four
possible value are now needed for the customize theme popup.

[IMP] website.snippet: create automatically the thumbnail; data-option became data-js; add data-eval method; rename check_class into toggle_class

geoip data. This is used to find a timezone for public user.

- First line is not correct due to url_for() refactoring's leftover
- href's should be full urls with domain name
- Use short language for hreflang if possible