Calculator: Solve some problems with special numbers (Fixes #489)
Calculator: Solve some problems with special numbers (Fixes #489)

- Fix for `Calculator calculates sums wrongs and triggers NaN animation`
- Fix returns of negative numbers

#455
andersevenrud/OS.js-v2,andersevenrud/OS.js-v2,Rxswyers/OS.js,Rxswyers/OS.js,Rxswyers/OS.js,Rxswyers/OS.js,andersevenrud/OS.js-v2,Rxswyers/OS.js,andersevenrud/OS.js-v2,andersevenrud/OS.js-v2