FLUID-5297: Apply "use strict" to Fluid.js and fix resulting test failure in DataBindingTest.js caused by failure to guard deltaMap update
Merge remote-tracking branch 'antranig/FLUID-5297'

* antranig/FLUID-5297:
  FLUID-5297: Apply "use strict" to Fluid.js and fix resulting test failure in DataBindingTest.js caused by failure to guard deltaMap update