GraphQL query responses show default language versions only

## Gentics Mesh Version, operating system, or hardware.
- v1.7.6

## Operating System
- MacOSX (Docker)

## JVM
- Open JDK 1.8.0_100

## Problem
If you use GraphQL in a multi language scenario, it will always give you the node's "versions" of the default language, no matter wich language you query. You can not query the version history of other languages.

## Reproducer
* Create a Node
* Make some changes in the default language
* Add a new language to the node
* Make a different number of changes then you did in the default language
* Query the versions
```
{
node(uuid: "06ca1bfb099c4d4580976995e6f594f0", lang: "de") {
version
versions {
version
}
}
}
```
```
{
node(uuid: "06ca1bfb099c4d4580976995e6f594f0", lang: "en") {
version
versions {
version
}
}
}
```
## Expected behaviour and actual behaviour
It should list different stacks of versions but it shows always the "versions" of "de"
"de" -->
```
{
"data": {
"node": {
"version": "1.0",
"versions": [
{
"version": "1.0"
},
{
"version": "0.1"
}
]
}
}
}
```
"en" -->
```
{
"data": {
"node": {
"version": "0.2",
"versions": [
{
"version": "1.0"
},
{
"version": "0.1"
}
]
}
}
}
```
See: https://github.com/gentics/mesh/issues/971

Start with the GraphQL node query shown in the reproducer, comparing the lang values "de" and "en" and how the versions field is returned. Reproduce the two requests against the reported multilingual setup, then verify that each language returns its own version history rather than the default language's list.

Written by the indexing model from the issue text.