Re-Integrate express-vue

[telion2]

One of our main packages has made a major update, which demands some code changes so that
the project can work with the new module again.
If we update this module we can finally use node-modules on our frontend like vuex which will make the whole datamanagement a lot easier in a lot of ways.

Read these 2 Issue before trying to migrate to prevent errors.
express-vue/express-vue#159
express-vue/express-vue#158

Also when working on this issue please switch to the 'testNewExpressVue' branch.

[telion2]

the issues of express-vue are solved. We can re-integrate the whole thing now.
This also means that #86 can be solved with the pako approach.

[telion2]

It seems a new bug appered making mixins unusable for now:
express-vue/express-vue#163