Update TEAM Engine 5.x documentation to reference new locations of Java 8 and Tomcat 7

[Installation documentation](https://github.com/search?q=repo%3Aopengeospatial%2Fteamengine%20Installation&type=code) for TEAM Engine 5.x should be updated to list the new locations of:

* [Oracle Java 8](https://www.oracle.com/java/technologies/javase/javase8u211-later-archive-downloads.html) or OpenJDK 8
* [Tomcat 7](https://archive.apache.org/dist/tomcat/tomcat-7/v7.0.109/)