chore(project): remove tests directory

The tests, as they are, are not used. The testing process is made from
the camunda-bpm-webapp project.

Related to: CAM-3102
chore(build): remove grunt-bower-task

Related to: CAM-3100
chore(package): update package.json dependencies

Related to: CAM-3101
chore(bower): update bower dependencies

Related to: CAM-3103
chore(build): correct deps.js build

Related to: CAM-3104
chore(misc): remove obsoltete files

And update the README.md

Related to: CAM-3100
chore(SDK-JS): remove SDK-JS mock references

Related to: CAM-3105