Added new schema property removeDefaultNone which will prevent the addition of 'None' to select boxes when required is set to false

Added new schema property removeDefaultNone which will prevent the addition of 'None' to select boxes when required is set to false.

Fixes a problem when non mandatory selects require a default option with an internationalised string. For example the default might be:
'(use system default)'
add WCAG label
Update ListField.js

Allow object rows in array, allowing to preserve insertion order instead of order by value.
Update to editor
Improvements to ACE editor auto-height calibration
Fix so that error classes clean up properly on validation
Validation no longer computed on hidden fields (i.e. dependent masked fields)
Allow for UMD to be disabled via window.umd = false
This allows for hybrid browser and AMD/CommonJS apps with Alpaca forms
More support for JSON Schema v4 (multipleOf, maxProperties, minProperties, date-time format)
Improved Bootstrap 3 views
Improvements to templating engines
Conditional dependency checking can now reference any level in the tree using the schema.id property (and referencing it via #id instead of a property id).
Connector-specific methods for looking up referenced schema and options
Fix for select field when in multiple mode and null value
Referenced schemas and options allow local overrides
Merge pull request #91 from chirale/master

Update ListField.js
Tweaks to dataSource support for arrays
Improved serialization of object field
Faster rendering of dependencies
Merge pull request #86 from Kirosoft/master

Added new schema property removeDefaultNone which will prevent the addit...
Moved "removeDefaultNone" setting from schema to options
Merge pull request #88 from 1337/patch-1

Enable click-on-radio-label
Adjustments to radio button labels for default and bootstrap views
Checkbox field supports multiple options
New checkbox field examples
Update to dependency resolution
Updates to views
Added a data safeguard
Added some documentation for checkbox field