Fixed JS-Charts X-Axis in members-statistics

Ghost User
2019-11-27T20:32:15+01:00

Closes #950

#### Previous behaviour
Steps to reproduce:

1. open Statistics
2. See missing statistic names on x-axis

#### New behaviour
Steps to validate that it works:

1. op Statistics
2. See no missing statistic names on x-axis

Closes #950 (closed)

Previous behaviour

Steps to reproduce:

1. open Statistics

2. See missing statistic names on x-axis

New behaviour

Steps to validate that it works:

1. op Statistics

2. See no missing statistic names on x-axis