Updated parser (tasks from MYGUIDE-226 and MYGUIDE-227)

Updated parser to handle reading animal name translations and animal details. Added new data.xml. Updated unit tests. 

I've changed data.xml a little, near line 820. I think it should be :
```
<name>
 <pl>Tygrys Sumatrzański</pl>
 <en> EN</en>
</name>
```
instead of :
```
<name>
 <pl>Tygrys Sumatrzański</pl>
 <en> EN</en>
 <description_adult>
 <image>img/placeholder_adult.jpg</image>
 <pl>PL </pl>
 <en>EN </en>
</description_adult> 
...
</name>
```