braces animation is shiny

Added a brace-opening animation to handle_init with a call to
animation_stopped.
Smoke loop timer can't play while bracesOpen is true.

TODO: 'raised' animation on init, after bracesOpen becomes true.
added 'raised' animation on init

Made a few booleans to avoid animation conflicts (and app freezing).
Animation priorities:
1. raise
2. braces
3. smoke and turn

time text changes are now made in handle_second_tick (instead of
update_watchface) to avoid redundant code.

Removed delay on opening braces.