JCR-3535 - Davex remoting should support absolute path hrefs

- use the path instead of the uri as keys for the cache (cherry picked from commit 9a059ff)
JCR-3535 - Davex remoting should support absolute path hrefs

- enable LRU policy for the caches
- improved doc

(cherry picked from commit 4374a3e7af2b58cf76d149ec2a5fffa5fbb75e7b)
JCR-3535 - Davex remoting should support absolute path hrefs

- enable LRU policy for the caches
- improved doc

(cherry picked from commit 4374a3e7af2b58cf76d149ec2a5fffa5fbb75e7b)