Merge pull request #251 from jasobrown/1.2

set default value for filter param to /list API to avoid NPE. 

reviewed by @sloke
Merge branch 'master' into 1.2
Change version to the branch convention's version number
Fix NPE in restore REST call
Merge pull request #254 from timiblossom/1.2

Fix NPE in restore REST call.

lgtm. committed.