Remove momentJS UTC call from date filter and fix date tooltip.

Closes #154
Closes #155
Merge branch 'v0.6.x' into develop
Fix sourcemap generation
Refactoring of task events using $scope.$emit
Refactoring of column events using $scope.$emit
Refactoring of row events using $scope.$emit
Add mouseup and mousedown to row events
Refactoring of label events using $scope.$emit
Refactoring of timespan events using $scope.$emit
Remove isolated scope from column directive
Remove old events from demo
Fix moving task to another row and avoid using $element.parent()
Remove scope isolation of directive task
Refactoring of ganttReady event using $scope.$emit
Refactoring of scroll events using $scope.$emit
Remove possible selection on interacting
Update README and make event names more consistent
Remove useless debounce injected dependency
Add missing require in custom directives
Include default template in sources using html2js.

Closes #150