I found this add-on that frees up some space on your firefox browser by putting the File Edit Tools etc.. into one little tiny button. Since there isn’t any instructions on how to get it to work, let me share with you the tip to do so. Once you download it, right click on the blank space next to File Edit Tools etc…line. Select customize and then find the Personal Menu icon and drag it to where you want it on your toolbar. I have it to the left of my back button. The easiest way to configure it is to click on Tools and then add-ons. Under the Personal Menu add-on it has an option button. You will then need to select and add what you want to show on the Personal Menu button. (If you click on say File and add it, it adds everything under that menu)
Once you have it configured the way you want it, right click again on the blank space next to File Edit Tools etc…line and uncheck Menus Toolbar. Viola!