Description of problem:
WebAdmin do not change language to english when my default browser locale is not equals "en".

Version-Release number of selected component (if applicable): 3.1

How reproducible:
Use a Browser with default locale pt_br

Steps to Reproduce:
1. Access portal, the default language selected is "Português do Brasil"
2. Change language to "English"
  
Actual results:
1. Access portal, the default language selected is "Português do Brasil"
2. Change language to "English"
3. The page reload and return with selected "Portueguês do Brasil"

Expected results:
1. Access portal, the default language selected is "Português do Brasil"
2. Change language to "English"
3. The page reload and return with selected "English"

Additional info:
I checked in select tag that in option language "English" is locale=default and "Português do Brasil" is locale=pt_br.

To correct this bug I change line in file /usr/share/ovirt-engine/engine.ear/root.war/index.html

From
<a href="webadmin">Web Admin Portal</a>
To
<a href="webadmin/webadmin/WebAdmin.html?locale=en">Web Admin Portal</a>