Outage ReST service forNode use case calculates dates incorrectly

The /rest/outages/forNode/[nodeId] endpoint incorrectly calculates the range of dates that it returns. It appears the author meant to return only the outages from the current week, but a coding error leads to it including only 1/1000 of one week:

https://github.com/OpenNMS/opennms/blob/foundation-2016/opennms-webapp-rest/src/main/java/org/opennms/web/rest/v1/OutageRestService.java#L160

(Constructing a java.util.Date based on subtracting a value from System.getCurrentTimeMillis() but not multiplying the subtracted value by 1000)

Also: this date range should be configurable. Defaulting to one week is fine, but the user should be able to override it.