Unable to reset language search

We are unable to reset language search, to reset language search we need to click on the different menu and then come back on language page.
We should have a language search like glossary search.

Steps to reproduce:

• Login to zanata
• Go to language page
• Enter "af" in search box and click search
• Observe the results
• If we wants to clean the search we don't have any option
• clicking on language page/refresh does not load whole language list again
• We need to click on the different menu and then click on language again.

Actual Result:

• Unable to reset language search
• On invalid search no error message shown just blank page

Expected Result:

• We should able to reset langauge search