added more spark_* convenience functions
DynamicEditor now dynamically updates for ILinkableHashMap.
fixed bug where getEntityPath() was returning incorrect path.

Change-Id: I04a95adb71755bf9cd141db9f6015bf286c9607a
fixed bug where csv columns would not work if requested before the data
was available

Change-Id: I82cd865170089b930b1c2596853cabf4680c78f8
Merge branch 'master' of https://github.com/IVPR/Weave into aws-temp