Prevent map to be zoomed and panned outside the world

no continous world just one
layers are displayed in one and not in every when continious
Add custom controls to the map

add zoom to world bounds
add search button to show hide the country search field
Merge pull request #16 from okfde/map-navigation

Map navigation
Merge branch 'master' into text-updates

Conflicts:
	source/javascripts/map.coffee