SettingSanity is a solution to the inane removal of some of the most useful features in Firefox. It also adds the option of toolbar buttons for toggling Images and JavaScript without opening your preferences, as well as some helpful tab settings at the request of many users. Supports Firefox 56. Mozilla has removed these options from Firefox Preferences window. Users can't access these options any more. So now you can't disable images, you can't disable JavaScript and you can't disable tab bar as these options are no longer available in Firefox settings.
Update: it looks like this change will only be visible to a fraction of users initially, so please plan any changes to be backward-compatible.
The search UI was retooled and it will launch with Firefox 34 (at least in the US region). This landed late in the Firefox 34 beta cycle since it is related to our switch of default search provider in certain regions, which was announced very recently.
Settingsanity For Firefox Browser
Unfortunately, this is bound to break some add-ons and themes. If your add-on overlays any content in the search UI or modifies its behavior, we strongly recommend that you test it on the latest beta (only the US English version seems to have this change for now). If you have any compatibility updates related to this issue in the review queues, please let us know on our IRC channel (#amo-editors) or the amo-editors mailing list.
Settings Unity Firefox
Let us know in the comments if any of your add-ons break because of this.