fix(gruntfile): do not reload server when public files updated
feat(sharedMode2): add pinch to zoom on elements

Found error that element jumps when finger released after pinch
feat(project): work with new users, with disconnecting users

Added feature to work with new connecting users, old disconnecting users
Added ability to send information about local multi-touch events
Added ability to receive information about remote multi-touch events
Sends description information specified by user