Added Color class

- Added Color class to make color representation and convertions more uniform
- Replaced standard convertions with Color.convertion
- Removed _algorithms.js, _deleteColor.js, ajax.js and the other convertion files
- Fixed bug in ColorModule, moved replaceAllOfColor to ColorModule as well as deleteColor

js/Util.js

@@ -1,5 +1,11 @@
 // Acts as a public static class
 class Util {
+    /** Returns elementOrElementId if the argument is already an element, otherwise it finds
+     *  the element by its ID (given by the argument) and returns it
+     * 
+     * @param {*} elementOrElementId The element to return, or the ID of the element to return
+     * @returns The desired element
+     */
     static getElement(elementOrElementId) {
         if (typeof(elementOrElementId) == "object") {
             return elementOrElementId;
@@ -11,25 +17,29 @@ class Util {
             console.log("Type not supported: " + typeof(elementOrElementId));
         }
     }
+
+    // Returns the text content of the element with ID elementId
     static getText(elementId) {
         return Util.getElement(elementId).textContent;
     }
-
+    // Sets the text content of the element with ID elementId
     static setText(elementId, text) {
         Util.getElement(elementId).textContent = text;
     }
+
+    // Gets the value of the element with ID elementId
     static getValue(elementId) {
         return Util.getElement(elementId).value;
     }
-    
+    // Sets the value of the element with ID elementId
     static setValue(elementId, value) {
         Util.getElement(elementId).value = value;
     }
+
     //add class .selected to specified element
     static select(elementId) {
         Util.getElement(elementId).classList.add('selected');
     }
-    
     //remove .selected class from specified element
     static deselect(elementId) {
         Util.getElement(elementId).classList.remove('selected');