Fix multiple typos, closes #627

src/js/core/modal_dialog_elements.js

@@ -30,10 +30,10 @@ export class Dialog {
      * @param {string} param0.title Title of the dialog
      * @param {string} param0.contentHTML Inner dialog html
      * @param {Array<string>} param0.buttons
-     *  Button list, each button contains of up to 3 parts seperated by ':'.
+     *  Button list, each button contains of up to 3 parts separated by ':'.
      *  Part 0: The id, one of the one defined in dialog_buttons.yaml
      *  Part 1: The style, either good, bad or misc
-     *  Part 2 (optional): Additional parameters seperated by '/', available are:
+     *  Part 2 (optional): Additional parameters separated by '/', available are:
      *    timeout: This button is only available after some waiting time
      *    kb_enter: This button is triggered by the enter key
      *    kb_escape This button is triggered by the escape key

src/js/core/read_write_proxy.js

@@ -224,7 +224,7 @@ export class ReadWriteProxy {
                     return rawData;
                 })
 
-                // Parse JSON, this could throw but thats fine
+                // Parse JSON, this could throw but that's fine
                 .then(res => {
                     try {
                         return JSON.parse(res);

src/js/core/sprites.js

@@ -206,7 +206,7 @@ export class AtlasSprite extends BaseSprite {
             srcX,
             srcY,
 
-            // atlas src siize
+            // atlas src size
             srcW,
             srcH,