Moved the location widget back into kenyaemr as it requires the Kenya EMR service
Added "is pregnant" calculation and alert
Improved validation error messages for phone numbers and applied this validation to next-of-kin contact as well
Updated kenyaui requirement to 1.1
Small refactor of calculations
* Calculations are automatically registered by CalculationManager (was CalculationProvider)
* Calculations now always fetched by class rather than name
* Alert calculations must extend BaseAlertCalculation and no longer need to be tagged as "alert"