Upgrade ELA to use tomcat 7 or 8

Currently ELA uses Tomcat 6. Tomcat 6 is an ancient standard, written for Java 5.X compatibility and was released in 2006 (8 years ago at opening of this topic). Tomcat 6 does not support ANY cipher suites (besides insecure SSLv3) currently on offer by IE11 in Windows 8. This problem will only get worse as older cipher suites utilizing the insecure RC4 standard (which IE11 does not support as of Windows 8.X IE11, these are still supported in IE11 for windows 7) are disabled in Firefox and Chrome in future updates. Manage engine needs to ensure a product as critical as an SIEM solution is as secure as possible, which they cannot do by running an 8 year old back end for their web interface. Please update to either Tomcat 7 or 8 as soon as possible so that we can secure your web portal properly.