Fix issues with displaying error messages for afterAll (browser compatibility)

- Switch from showing error stack to showing message/description since only chrome/ff support stack
- Fallback to error.description if error.message is undefined
- Made exceptionList variable name consistent between both reporters

spec/console/ConsoleReporterSpec.js

@@ -232,7 +232,7 @@ describe("ConsoleReporter", function() {
         reporter.afterAllException(error);
         reporter.afterAllException(anotherError);
         reporter.jasmineDone();
-
+        
         expect(out.getOutput()).toMatch(/After All Exception/);
         expect(out.getOutput()).toMatch(/Some Other Exception/);
     });