Added global brightness controll

html/index.html

@@ -16,6 +16,14 @@
             </form>
         </div>
 
+        <h2>Brightness:</h2>
+        <div id='container'>
+            <form id='brightnessform' onSubmit="return setbrightness()">
+                Rot: <input id="brightness" value=1.0 /><br/>
+                <button id="sendbrightness">Setzen</button>
+            </form>
+        </div>
+
         <h2>Gamma:</h2>
         <div id='container'>
             <form id='gammeform' onSubmit="return setgamma()">
@@ -110,6 +118,13 @@
                 return false;
             }
 
+            function setbrightness(){
+                let i = document.getElementById('brightness').value;
+                let url = "/setbrightness/" + i;
+                getRaw(url, function test(){});
+                return false;
+            }
+
             function updateLog(){
                 getRaw("/apps/log", function(text){
                     document.getElementById('logs').innerText = text;