MB: added start page, updated navigation, added stub pages for employees and customers
Merge branch 'master' of https://github.com/marcelbirkner/project-staffing
Update README.md
MB: enhancement to addEmployee page, allow address search via google maps, show table of all employees
MB: updated employee fields
MB: updated employee table
MB: bg image for jumbotron on startpage
MB: added help section with er diagram, designed with https://www.draw.io
MB: added initial test data
MB: update docu
MB: added backend data for projects, customers and employees
MB: update links
MB: update links
MB: update links
MB: update readme
MB: added project links to employees
MB: added MongoDB backend and test data
MB: added MongoDB data files to gitignore
MB: added MongoDB search by single skill
MB: added MongoDB search by multiple skills, WiP