Common reorg (#8025)

* Re-organize common folder

* fix: Correct paths in tests

* fix: move new content to proper folder

* chore: Move audio folder to assets

* Move sprites to sprites assets directory

* Move css sprites to assets directory

* Split out readmes for common code and sprites

* Move images to assets directory

* Move destinatin of shared browserified file

* remove unused file

* move compiled js to client-old

* Fix karma tests

* fix: Correct paths for sprites

website/common/script/fns/handleTwoHanded.js

@@ -0,0 +1,23 @@
+import content from '../content/index';
+import i18n from '../i18n';
+
+module.exports = function handleTwoHanded (user, item, type = 'equipped', req = {}) {
+  let currentShield = content.gear.flat[user.items.gear[type].shield];
+  let currentWeapon = content.gear.flat[user.items.gear[type].weapon];
+
+  let message;
+
+  if (item.type === 'shield' && (currentWeapon ? currentWeapon.twoHanded : false)) {
+    user.items.gear[type].weapon = 'weapon_base_0';
+    message = i18n.t('messageTwoHandedUnequip', {
+      twoHandedText: currentWeapon.text(req.language), offHandedText: item.text(req.language),
+    }, req.language);
+  } else if (item.twoHanded && (currentShield && user.items.gear[type].shield !== 'shield_base_0')) {
+    user.items.gear[type].shield = 'shield_base_0';
+    message = i18n.t('messageTwoHandedEquip', {
+      twoHandedText: item.text(req.language), offHandedText: currentShield.text(req.language),
+    }, req.language);
+  }
+
+  return message;
+};