removing overflow-y in .panel-body to fix #77
update wait method of E2E scenario
updating test methods
Removing unused imports
Updated README to show if the BUILD is good

Updated README including SnapCI logo to show if the Build is green or failing.
Editing README to show SnapCI logo in title anchor

Now SnapCI build logo can be shown with link https://github.com/RocketBoard/rocketboard/#rocketboard
Revert "Removing unused imports"

This reverts commit 32d0bc56fa0325ee0f3184028530cd4eae3d4b8e.