Migrate from avoriaz to vue-test-utils

[vjoao]

vue-material/test/utils/mountTemplate.js

Line 2 in af0b89c

import { mount } from 'avoriaz'

There is a deprecation note on avoriaz library: https://github.com/eddyerburgh/avoriaz#deprecation
We should move to vue-test-utils to maintain test compatibility.

[Samuell1]

After changing to vue-test-utils mostly all tests for components are broken, because of changed names, functionality.