ProxyPassReverse should refer to cluster

When Apache is used for load balancing, directive ProxyPassReverse should refer to the url of a balancer instead of the individual urls of the backend systems.
Update Modules.md

Google's HTML Compressor has now a Java API too.
Merge pull request #2574 from akkie/patch-1

Update Modules.md
Merge pull request #2570 from martinburger/patch-2

ProxyPassReverse should refer to balancer instead of back ends
fix tree layout of subproject example
Update SBTSubProjects.md

changed the method name from depends to dependsOn as per the github question http://stackoverflow.com/questions/21730323/play-framework-2-2-1-adding-non-play-java-project-as-sub-project, was facing the same issue and this solved it.
Merge pull request #2589 from rishikhare/patch-1

Update SBTSubProjects.md
Merge pull request #2586 from ecopoesis/patch-1

fix tree layout of subproject example
Fixed regression in rendering repeated Java form fields

Fixes #2499

The actual bug was that the the Java Field.indexes implementation was
not returning distinct indexes when the form had no value associated
with it (eg, if it failed validation), so if a field that was repeated
had multiple sub fields, the repeat hepler would render it once for
every sub field.

Additionally, in that case, the ordering of the indexes was made
random by virtue of being calculated fdrom the keys of a HashMap, where
but the indexes should be returned in order.

This only just exposed itself because the old repeat helper simply
rendered as many fields as the maximum index.  The new one however
renders fields equivalent to what indexes exist in the form.

New tests test both that only one of each index appears, and that
indexes are always returned in order.
Merge pull request #2633 from benmccann/form-repeat

Fixed regression in rendering repeated Java form fields
Fix to person format variable name
Merge pull request #2649 from wfairclough/patch-1

Fix to person format variable name
Continuation frame handling for WebSockets

Also implemented backpressure.

Also backported WebSocket test framework and other improvemets from
master.
Created a TestingYourApplicaiton page as the home page of the testing section.
Added ScalaTest + Play library to the build dependencies.
Tweaked documentation. Added two code samples for ScalaTest.
Organized code samples for test into scalatest and specs subdirectories of test/code. Adjusted links on page such to match and verified it with the validate-docs target.
Cleaned up and clarified the links between the pages in the testing section.
Got the tests to run again after the code reorganization.
Ported UserServiceSpec to ScalaTest.