Add Excel formatting method to the AgeFormatter
Remove to_number/string/boolean methods and fix to_csv on AgeFormatter
Merge pull request #15 from cbmi/issue-8

Fix issues in AgeFormatter which caused Excel export to fail
Update to Cilantro 2.1.5, fix browser warning
Add missing space before memcache service name in travis config
Update to Cilantro 2.1.6 to fix export behavior
Merge branch 'master' into test