Use flask for the development server

[aulemahal]

I'm not sure of it, but I think that if we served the dev version of finch with flask, we could make use of the development server : it would reload upon local file changes. We could maybe also make use of the debugger?

Currently, each time I modify a file, I must make start; make stop which is a bit slow.

pyWPS-flask exists so it must be feasible.

[huard]

It exists, but does it work ? I think it is outdated.