As a user of the Mismatch Finder I want to work with the site in my language.
**Problem:**
We currently only support language switching for our Single Page Applications (specifically Mismatch Finder and Query Builder) via URL parameter.
We need to also offer it via the UI as a LangSelector so that users can easily change the language of the page.
**Screenshots/mockups:**
Mock-up and specs in the file here: TBC
**BDD**
GIVEN the Mismatch Finder
AND Language Selector tool
WHEN a Mismatch Finder user wants to change the language of the page
THEN they are able to use the LangSelector to change the language of the page
**Acceptance criteria:**
[] The LangSelector is available on the Mismatch Finder
**Notes**
Investigation into language switching options for Single Page Applications (Mismatch Finder and Query Builder) T324653