Revert "Java 8 compatibility"

This reverts commit c5b9b55f38f0e0f1eaae52c920a35c04907dc749.
Revert "Upgrade to jersey 1.17.1"

This reverts commit 4d214aa7e83cddc98a58f3c3e085621222897e28.
Upgrade Spring to 2.1.3
Improve GZipFilter by using a fixed ehcache GZipFilter