converted existing field values to "simple" field values
started a lot of groundwork for hierarchical field values for custom
fields. need to make some other notable changes to get it fully working
added a view for listing all existing fields
navigate between field listing and create field views
new fields display in field listing without a page refresh
refactored if condition on field templates
implemented view for viewing an existing field
added UI for adding values to custom hierarchical fields
refactored hierarchical values UI
deleted commented code
creating custom hierarchical field creates a default root value and it
is loaded when viewing the field.
added values to a custom hierarchical field is mostly working
viewing hierarchical custom field always starts at root value
hierarchical values as typeahead text fields when creating content
fixed hierarchical field value path issue
fixed error marshalling create field value service response to JSON
hierarchical fields are persisted
hierarchical fields displayed on view article pane
Merge pull request #35 from marshmellow1328/issue-32

Issue 32