Add courses data.
Fix courses panel - add "clearfix" and chage "col-*" styles.
In course panels set image style to "thumbnail" to allow Bootstrap to
manage its size.
Add microdata for CDT products.
Fix glyphicon issue - not updated correctly when pressing on the same
item
Fix identation
Add "25 years in business" image
Small fix in tag - text not displayed correctly
Merge branch 'cdt-web-irena' into cdt-web-jack
Merged cdt-web-irena to cdt-web-jack

Merged cdt-web-irena to cdt-web-jack for using latest version of
custom.css and index.html with Less variable.