Current mission list removable in Dashbaord
adding code for triggering obstacles
Triggering Obstacles - energy reduction and alerts - push this info from
attackactivity to poisFromNative - changes to javascript, HTML and CSS
files
obstacle trigger - small changes
Implement Energy reduce when user trigger Obstacle
and Obstacle stole energy from user.
/*
						 * When obstacle be triggered, it will reduce energy of user who
trigger this obstacle.
						 * Also put half of stolen energy to player who create it.
						 */
Implement remove mission functionality in Dashboard:
1. Remove mission 
2. Remove the obstacle create by user in that course