add alt texts on images from image brick
fix indentation
replace if statement on image brick rendering
Merge branch 'features/3047_imagebrick_alt_tags' of github.com:screenconcept/kuhsaft into features/3047_imagebrick_alt_tags
resolve merge conflicts
Merge pull request #203 from screenconcept/features/3047_imagebrick_alt_tags

add alt texts on images from image brick