+ removed unnecessary script array arg for posterior segment
Merge branch 'feature/glaucoma' into feature/dr-function
Merge branch 'feature/glaucoma' into feature/dr-function
+ added the NSC Grade functionality to the Posterior Segment examination element
Merge branch 'feature/glaucoma' into feature/dr-function

Conflicts:
	assets/js/module.js
+ DR grading element introduced as child of posterior segment
Merge branch 'feature/glaucoma' into feature/dr-function
Merge branch 'feature/glaucoma' into feature/dr-function
+ styles for displaying child elements
+ fixes for rendering child elements through controller
+ js functions for handling adding and removal of child elements
+ editing and displaying of DR Grading fields
+ implement automatic call to js init function for added elements
+ work with the current naming convention for element init function
+ initialise the dr grading element when added after the posterior segment has been edited
+ added missing doodles for the posterior segment to support DR grading
+ rows of buttons for posterior segment element
+ fixes to automatic element init to ensure child elements are initialised correctly
+ added example images for DR Grading
+ set the dr grade descriptions when manually overridden
+ mark dr grades dirty when manually changed to prevent being overridden by further changes to the posterior segment eyedraw
+ Only render default form views for elements when view file not found
+ fix for dr grading descriptions when element added after initialisation