WebUI fixes & Draggable LEDs (#1444)

* WebUI fixes & Draggable LEDs

* Correct some keystone issues

* Fix lgtm warnings (thx @Lord-Grey)

* Change of LGTM badge (code quality)

* Log output and LED preview window can be maximized

* Rework

* z-index of the corners corrected

* migrated to animate.css v4.1.1

* Fix collapsing & add gap constraints

* Address LGTM findings

* design refactor

* Typo fix (thx @Lord-Grey)

* Avoid overlap during keystone correction

Co-authored-by: LordGrey <lordgrey.emmel@gmail.com>
Co-authored-by: LordGrey <48840279+Lord-Grey@users.noreply.github.com>

assets/webconfig/css/darkMode.css

@@ -274,6 +274,10 @@ select.form-control {
     color: #DDDDDD;
 }
 
+.keystone_correction_corners {
+    border:1px solid white;
+}
+
 .checkbox label::before {
     border-color: #616161;
     background-color: #212121;