Added quartz plugin dependency
Created RefreshCacheEntryJob.groovy
Modifies cache functionality to provide previous cache value for a given key while the new value is being retrieved via web service in a separate thread
Adds try and catch so the app does not crash if one or more of the web services are not available to retrieve the data
.gitignore entries are now more generic
Added javadoc comment to job
Added bower support to resolve web static dependencies
Performs changes to upgrade to Grails 2.3.11
Adjusted travis build file to support Grails 2.3+ build publishing to Nexus
Merge pull request #12 from aruizca/master

Fixes #7