Move Jest to parent package (devDependencies)

[ferrannp]

The same we did here with eslint and flow #719 can be done with jest. So we install it only once.

The blocker here is that we need to convert gluestick-shared tests to Jest (there are very few so it should be fast).

This should also allow us to move presets and plugins needed for test env so the problem of running test from parent package should also be solved.

[ferrannp]

This will also solve issue of publishing coverage to npm since that folder will be created into parent directory. Therefore, we do not need to add coverage in every .npmignore once this issue is resolved.

[ferrannp]

This might need some more thinking, see jestjs/jest#3112.

It also needs a solution since running tests form parent package (using lerna) does not really work locally.