Spending available 2019 budget

[dimaip (Dmitri Pisarev)]

Here’s the funding proposal from the UI corner of Neos

Funding request: TypeScript integration, part 2

Dear team! Last year I and @JamesAlias attempted to tackle the conversion of neos-ui into TypeScript. In 90h we managed to convert all of the leaf packages (with a notable exception to SelectBox which still needs a bit more love). While certainly, it was a satisfactory result, it doesn’t yield a lot of real fruits in practice just yet: when creating new features we still mostly have to use JS, because we would very likely need things from the “second-order” packages which are not converted ye…