Merge `no-latex` into `react`

The latex-less implementation has evolved and changed a lot of code. It would make sense to merge it into react since no-latex has reached feature parity and making changes to react will make the future merge more troublesome.

The downside of merging no-latex into react is that the DB structure is changed which makes it incompatible with dualstack deployments. We therefore cannot offer dualstack deployments any advantages that react has now had for a while..