Added red bullet figure for problem map.
Draw problem, human, light, bulb on the map.
Remove modal.
Added description when hovering on problem.
Updated popover on click red bullet.
Merge branch 'master' into nocanvas

Conflicts:
	templates/problem_map.html
Draw 3 machines.
Merge branch 'master' of https://github.com/SweetFeedback/SweetRewardCSIE
Merge branch 'nocanvas'