Switch to using `this.$router` for page navigation, instead of JS redirects

[5HT2]

Docs:

• https://v3.router.vuejs.org/api/#the-route-object
• https://www.google.com/search?q=vue+router+update+query

[5HT2]

Moving this to 1.1.0 as it does not affect release.

[5HT2]

Moving to 1.0.0 as it is blocking.