Add missing return tags
Merge pull request #2135 from bcrowe/htofix-returndocs

Add missing return tags
Add test cases for pluralization/singularlization of quota.

Closes #2077
include calls without parentheses

Refs https://github.com/cakephp/cakephp/pull/1698/files#r6748085
Merge pull request #2140 from ravage84/include-parentheses

include calls without parentheses
Change is_null() calls to strict checks
Change is_null() calls to strict checks in CakeSchema::_arrayDiffAssoc()
Merge pull request #2142 from bcrowe/hotfix-strictNull

Change is_null() calls to strict checks
Remove extra space around the brace in CakeSchema::_arrayDiffAssoc()
Merge pull request #2143 from bcrowe/hotfix-extraSpace

Remove extra space around the brace in CakeSchema::_arrayDiffAssoc()
Readability update for Dispatcher::_invoke()
Merge pull request #2147 from bcrowe/hotfix-dispatcher

Readability update for Dispatcher::_invoke()
Add tests for curve<->curves

Closes #2148
Fix inflection rules for curves.

Remove curve from the uninflected list and update rules so it, wolves,
and lives are still properly handled.

Fixes #2148
Added 'xhr' as callback in JqueryEngineHelper::request() so it formats as Javascript.
Added test case for JqueryEngineHelper::request() to validate 'xhr' callback.
Removed /mpm from 'url' option for last test in JqueryEngineHelper::testRequest().
Merge pull request #2153 from Cameri/master

Added 'xhr' as callback in JqueryEngineHelper::request() so it formats as Javascript.
Ability to use PaginatorHelper::sort() with only one direction.
Correct wording of Hash::expand()