Update german translations
Update Dutch translations
Update spanish translations
Fix spelling in the docs

Also rewrap at 80 chars (which looked to be what it was at in most
places)
Rename observations doc file
Fix typo in method name
Update Dutch translations
Merge pull request #819 from SamWhited/spelling

Fix spelling in the docs / a method
Merge pull request #814 from kruks23/translation1

Update spanish translations
Merge pull request #813 from plsng/translation

Update Dutch translations
Merge pull request #812 from kriztan/patch-1

Update german translations