Changes to improve handling of dead and voided patients
* Patient header updates via angular, so changes made by one user are seen by everyone
* Fixed person name not being displayed for voided patients
* Fixed program histories running eligibility calculations for voided patients
* Fixed Visit menu allowing dead and voided patients to be checked in
Updated persons, visits and report requests to all use kenyaui.formatDateParam when simplified
Replaced use of Provider role with Clinician role
Added help panel to create account page
Improved descriptions of roles in SecurityMetadata
Added Roles tab to Developer > Content
Removed unused HFE 1.9 Extensions module
Added custom tag handling for <encounterProvider>
* Uses same select2 widget as other search boxes in KenyaEMR
* Uses actual provider objects rather than person objects