AGPUSH-263 Fixed URL to cartridge documentation
Updating to the following UnifiedPush version that adds HSTS support:

https://github.com/aerogear/aerogear-unifiedpush-server/commit/c295679fb09b4665b09d3754e381d59d24b3002c
Updating to the following SimplePush version:

https://github.com/aerogear/aerogear-simplepush-server/commit/8e5eed3db0757368c989340be590163d9134f946
Appending JAVA_OPTS_EXT to JAVA_OPTS.
Updating to the 0.8.0 version of UnifiedPush:

https://github.com/aerogear/aerogear-unifiedpush-server/commit/eb1adc0df35537be57b1c37aa1215395f3e9a022
Updating to the 0.8.0 version of SimplePush:

https://github.com/aerogear/aerogear-simplepush-server/commit/2118f0e060106e3e0fbf5ebcdf099203093e6451
add link to the admin console guide.
Update list of locked files.