Fixed issues for Splunk App for Infrastructure

The following issues are fixed in the Splunk App for Infrastructure version 1.3.0.

Date resolved	Issue number	Description
2019-03-20	SII-3792	Alerts can't be created for groups of a specific format
2019-03-08	SII-3749	Single value performance indicators in the Overview Workspace do not refresh.
2019-03-07	SII-3519	Splunk App for Infrastructure Install security concerns collectd via apt-get it uses the "--allow-unauthenticated" flag
2019-03-06	SII-3672	The easy install script for Mac OS X installs an additional universal forwarder when one already exists on the system.
2019-03-06	SII-3673	The easy install script for Mac OS X fails when the /usr/local/sbin directory is not available.
2019-03-05	SII-3704	Non-admin users cannot interact with alerts.
2019-03-04	SII-3713	The app will not discover universal forwarder inputs on a host if the host's local language is not English.
2019-02-13	SII-3621	Cache-buster blocks automation of the easy install script.