list of sponsors + fixes

- added list of sponsors, if you host an instance, it can be enabled with showSponsors.
- fixed download button thickness on ios.
- about button now opens about tab when no new changelog is available.

src/localization/languages/en.json

@@ -144,6 +144,7 @@
         "NewDomainWelcome": "cobalt is moving! same features, same owner, simply a more rememberable domain. and still no ads.\n\n<span class=\"text-backdrop\">cobalt.tools</span> is the new main domain, aka where you are now. make sure to update your bookmarks and reinstall the web app!",
         "DataTransferSuccess": "btw, your settings have been transferred automatically :)",
         "DataTransferError": "something went wrong when transferring your preferences. you'll have to open settings and configure cobalt by hand.",
-        "SupportNotAffiliated": "cobalt is <span class=\"text-backdrop\">not affiliated</span> with any services listed above."
+        "SupportNotAffiliated": "cobalt is <span class=\"text-backdrop\">not affiliated</span> with any services listed above.",
+        "SponsoredBy": "sponsored by"
     }
 }