xF2 Add-on Addon Update Notifier 1.1.8

As suggested by @Mouth & @benFF: Show buttons for download/changelog in the notice on top of the add-ons page:

Basically a fix to hide the "update available" info and buttons for add-ons that are disabled.

Thanks to @Mouth for raising this issue

By default (since this update) the download button has been set to download directly from xenforo.com if possible. This release adds the option to prefer downloading from developer's own site if it exists.

If a download link allows direct downloading from the Xenforo resource page, send the browser there instead of the developer's resource page.

This is a UX improvement since most owners are likely already logged into XF, while on the developers own sites' they might not even have an account.

Thanks for the suggestion/report @Mr. Jinx

Don't show version/download/changelog info in the "Upgradeable" box.
(When FTP uploading zip archive with new version)

Since it was requested by a few customers to allow more add-ons, we decided to add 2 new tiers..

If you currently have e.g. 60 extra add-ons and choose to upgrade to 120 extra, the remaining days on your current license will be prorated, e.g. 50 days remaining on license @ 60 extra add-ons becomes 25 days remainings @ 120 add-ons + 1 year from that date.

Some phrases had been added during development when we tested the 90-prefix in versioning.

This release resets them to be on version 1010391 rather than previous wrong value of 901000070

Previous versions would not show the avatar if the forum was at e.g. /forum or /community

This release fixes that.

The same summary of updateable addons that shows on the ACP index (if enabled) also shows on top of the add-ons page (by default on, can be disabled in options)