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/content/conf_logging.html

@@ -7,7 +7,15 @@
     </div>
     <div class="col-lg-12">
       <div class="panel panel-default">
-        <div class="panel-heading"><i class="fa fa-book fa-fw"></i><span data-i18n="conf_logging_logoutput"></span></div>
+        <div class="panel-heading">
+          <h4 class="panel-title">
+            <i class="fa fa-book fa-fw"></i>
+            <span data-i18n="conf_logging_logoutput"></span>
+            <a href="#" class='fullscreen-btn' role="button" title="Toggle fullscreen">
+              <i class="fa fa-expand fa-fw pull-right"></i>
+            </a>
+          </h4>
+        </div>
         <div class="panel-body">
           <div id="log_content"><span style="font-weight:bold;font-size:17px" data-i18n="conf_logging_nomessage"></span></div>
         </div>