Refactoring oauth token handling functions and dependants

components/device-mgt/org.wso2.carbon.device.mgt.ui/src/main/resources/jaggeryapps/devicemgt/app/modules/api-wrapper-util.js

@@ -31,7 +31,7 @@ var apiWrapperUtil = function () {
             log.error("Could not set up encoded tenant based client credentials " +
                 "to session context. No username is found as input.");
         } else {
-            var dynamicClientCredentials = tokenUtil.getDyanmicClientCredentials();
+            var dynamicClientCredentials = tokenUtil.getDynamicClientCredentials();
             if (!dynamicClientCredentials) {
                 log.error("Could not set up encoded tenant based client credentials " +
                     "to session context as the server is unable to obtain dynamic client credentials.");

components/device-mgt/org.wso2.carbon.device.mgt.ui/src/main/resources/jaggeryapps/devicemgt/app/modules/backend-service-invoker.js

@@ -43,7 +43,7 @@ var backendServiceInvoker = function () {
     privateMethods.getAccessToken = function () {
         var tokenPair = parse(session.get(constants["ACCESS_TOKEN_PAIR_IDENTIFIER"]));
         if (tokenPair) {
-            return tokenPair.accessToken;
+            return tokenPair["accessToken"];
         } else {
             return null;
         }

components/device-mgt/org.wso2.carbon.device.mgt.ui/src/main/resources/jaggeryapps/devicemgt/app/modules/util.js

@@ -27,7 +27,7 @@ var util = function () {
     var adminUser = devicemgtProps["adminUser"];
     var clientName = devicemgtProps["clientName"];
 
-    module.getDyanmicCredentials = function (owner) {
+    module.getDynamicClientCredentials = function () {
         var payload = {
             "callbackUrl": devicemgtProps.callBackUrl,
             "clientName": clientName,