Adding documentation on the Apache HttpClient configuration and JerseyClient configuration.
Service class --> Application class in views.rst
Merge pull request #605 from minisu/docs-fixes

Service class --> Application class in views.rst
fixing typos
Merge pull request #608 from derlucas/master

Fix typos in the core documentation
Adding documentation for client timeToLive and keepAlive
Merge pull request #599 from reines/client_docs

Adding HttpClient and JerseyClient documentation