Modified builtin function parser and execution engine implementation to support more detailed
function declarations, fixed method display area in schema editor ui, added textarea for
multiline input.
Modified Actions and SchemaHelper classes to allow SchemaRelationships to implement save actions etc.
Merge branch 'develop' into function_parser

Conflicts:
	structr-core/src/main/java/org/structr/core/entity/AbstractNode.java
	structr-ui/src/main/resources/structr/js/schema.js
Ready to merge the new function parser implementation into the develop branch.
Merge branch 'develop' of github.com:/structr/structr into develop