[nl] Replace the word “disk” by its translation “harde schijf”
[nl] Fix capitalisation of one title
Merge pull request #564 from kheyse/translate_disk

Correctly translate the word “disk” in dutch
Merge pull request #563 from kheyse/fix_title_capitalisation

Fix capitalisation of one title to match the style of other titles (in Dutch)
[nl] -dt errors and incorrect conjugation of english verbs in dutch
Change system('ruby makepdfs') to system('sh makepdfs’); Fixes progit/progit#557
changed system(“sh makepdfs”) to system(“bash makepdfs”) because makepdfs is a bash script
Merge pull request #565 from kheyse/fix_t_errors

Fix incorrect conjugation of english verbs 'clone' and 'push' in dutch
Merge pull request #567 from kheyse/rakefile_fix

Change system('ruby makepdfs') to system('sh makepdfs’); Fixes #557