fix(Hiring ribbon): uncover Modeler Selection

-- moved ribbon 10px to the right side
-- moved Selection 1 stack to the left
-- removed Executor.js entry from docpad.conf
-- reduced box size of the ribbon (much more invisible space was used than
needed

Closes: #CAM-1488
fix(blog+img): improve pictures and change link

-- improve loading of Hiring Ribbon and CC license pic
-- change blog link in footer
imprv(title.tags): increase relevancy for bpmn
updt(bpmn): add bpmn alt tag to image
updt(team): add 1und1 as partner involved