Xuggler error messages are not displayed in external services jsp

• Type: Regression Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.0 Beta 8
• Fix Version/s: 7.0.0 CE RC1
• Component/s: Portal Configuration, Portal Configuration > Server Administration
• Labels: None
• Story Points: 1.25
• Fix Priority: 3
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/37217

steps to reproduce:

1. start portal and go to server Admin -> external services
2. Set a breakpoint in XugglerImpl under installNativeLibraries.
3. click install and cause an exception in XugglerImpl

expected result: an exception message is shown in the UI
actual result: no message is shown