Version control button is not color coded properly when building locally

Not a big issue but just so it's documented, the version control button does not turn purple when on latest and on a local build. The production version does get the proper color. This is caused by [the following function](https://github.com/bluerobotics/bluetheme/blob/620efa473f466cc6fbacbf47a4fe0e24b8723e36/templates/version_selector.html#L27) because it looks at the page url but the local build is not routed the same way.

**Production**

**Local**