Added test file to troubleshoot problems with JS files not loading

Multirow and other functions/Other experimental features/README.md

@@ -24,4 +24,7 @@ toolbarbutton#alltabs-button {
 <p>Toggles visibility of the whole navigation toolbox as if you were on fullscreen, so that it's only visible when you have the mouse over it, or when hovering the mouse to the top of the screen when it's hidden. You can also maker bigger the hitbox to trigger the visibility of the toolbox changing the height of <code>fsToggler.style.height</code>at the bottom of the script from 10px to anything you want (just note that the bigger you make it, the more web area content will be unclickable on top).</p>
 
 <h3>Navigator-toolbox-autohide-tabs-below.uc.js</h3>
-<p>Same as navigator toolbox autohide, except that it shows the tabs below (you have to disable the tweak on userchrome.css if you had it enabled). ou can also maker bigger the hitbox to trigger the visibility of the toolbox changing the height of <code>fsToggler.style.height</code>at the bottom of the script from 20px to anything you want (just note that the bigger you make it, the more web area content will be unclickable on top).</p>
+<p>Same as navigator toolbox autohide, except that it shows the tabs below (you have to disable the tweak on userchrome.css if you had it enabled). ou can also maker bigger the hitbox to trigger the visibility of the toolbox changing the height of <code>fsToggler.style.height</code>at the bottom of the script from 20px to anything you want (just note that the bigger you make it, the more web area content will be unclickable on top).</p>
+
+<h3>Test.as.css</h3>
+<p>This is a test file to check that both external non-userchrome css files and js files are loaded through <code>userchrome.xml</code>. It draws a red border around all editable elements inside firefox UI.</p>

Multirow and other functions/Other experimental features/Test.as.css

@@ -0,0 +1 @@
+*|* {border: 1px solid red !important}