Cleanup in CombatView and index page UI.   Make use of ng-if to keep the dom clean.
Move alert service UI into game-container, and clean up implementation.
Merge branch 'develop' of github.com:justindujardin/pow2 into develop
Update icon-render directive to be more reusable.
 - Share a single rendering canvas that is acquired/release through the game service.
 - Add support for controlling frame/width/height of the sprite that is to be rendered.
Stroke the characters with an black outline 1px thick at 80% opacity.
Misc cleanup
 - ninja-female default character for now.
 - fix aspect ratio in hero card
 - move combat map positions to add room for right-side action buttons.
 - Change the alertService message style.