Fixed requirejs build issues /w livestamp
Working JodaTime persistence and play formatters
Converted all models to joda DateTime, LocalDate & LocalDateTime

* All user entered dates should be stored as Local
* Created dates & system values are UTC DateTime
* Removed all default date time values from the model. Should be
  using javascript "new Date()" in the UI if a field requires default
Downgraded to usertype.core 3.0.0.GA due to compatibility issues

* Hibernate throwing NPE when reading null date columns.
Removed default values for model date fields.
Fixed date formatting in UI for JodaTime dates
Date formatting for birth record charting
Timepickers default to current date
JSON serialization support for Joda Time objects
Date formatting for sidebar due dates
Estimated Due Date knob date formatting
Fixed overdue date format for the estimated due date knob
Changed time display format to "h:mm"
Fixed calculation of gestational age at birth
Merge branch 'feature/jodatime' into develop