[headless-blueprints] blog and store blueprints do not work with 3.0.5 build

[russdanner]

Expected behavior

Rest calls should return proper responses

Actual behavior

Rest calls fail due groovy exceptions related to .text and .toInstant()

	at java.lang.Thread.run(Thread.java:745)
Caused by: groovy.lang.MissingPropertyException: No such property: text for class: java.lang.String
	at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.unwrap(ScriptBytecodeAdapter.java:53)

Caused by: groovy.lang.MissingMethodException: No signature of method: org.dom4j.tree.DefaultElement.toInstant() is applicable for argument types: () values: []
Possible solutions: content()

[avasquez614]

PR craftercms/studio#1041

[russdanner]

VERIFIED