Also show redirect header html in user language

Like we do for normal entity views.

Change-Id: I8b413c8b15a7e54ab501112132108dee211f7102
Add TimeFormatterParserRoundtripTest

Wanted to add this for a long time now. Starting with some basic
tests. Probably more to come.

Change-Id: Ic5db99c7863ed66a0540abd6e8a9fbce061939bd
Merge "Also show redirect header html in user language"
Merge "Add TimeFormatterParserRoundtripTest"