finished ticket #14047
http://redmine.ruswizards.com:8100/redmine/issues/14047
added manual handling of config changes in third activity
deleted method  from MainActivity
all views founded inside onCreate() method;
added static constatnts for extra keys;
now third activity visually as first activity
Merge pull request #6 from eteplyakov/RM_14047_Lab_level_1_Activity_rotator

RM14047 - Lab level 1. Activity rotator