Clean npm dependencies

It seems that the package jasmine-ts is not used and moreover, the latter is not maintained anymore (See https://github.com/svi3c/jasmine-ts#readme).

It should be removed.

Some others seems to be unnecessary such as jasmine-node (See https://www.npmjs.com/package/jasmine-node#project-status).

Check each dev dependency by searching it's use in all the source files and remove it if it's not used.