fix(dhTeaser): implemented additional tests

Testing dhTeaser to correctly show/hide texts and buttons.
Merge branch 'master' of github.com:dothiv/dothiv
trans(): snapshot of reviewed texts for about dotHIV page
feat(dhTeaser): teaser can now be collapsed again

This commit also fixes some minor CSS and HTML issues.
fix(domain): domains don't have to end in .hiv

This is used for testing purposes.
fix(continuous-updating): restart update immediately if changed in origin
chore(continuous-updating): improve progress output
chore(continuous-updating): infer composer location from environment
fix(continuous-updating): fixed invalid comparison
Merge remote-tracking branch 'upstream/master' into jenkins-karma