Update security.rst

Fixed a few grammar issue, tied up some parts.
Merge pull request #1504 from davidyell/patch-3

Update security.rst
Update security-component.rst

Fixed a few typos and grammar bits. Wrapped some variables and methods. Also de-linked the single reference to SecurityComponent which links to the current page.
Update security-component.rst

Updated the grammar to correct the apostrophe. As the actions belong to the controller.
Merge pull request #1505 from davidyell/patch-4

Update security-component.rst
[fr] follow e19efe7

Fix syntax error in note
[fr] follow #1491

Update global-constants-and-functions.rst
[fr] follow #1498

Added info about 'inline' and 'block' options for postLink().
[fr] follow #1504

Update security.rst
[fr] follow #1505

Update security-component.rst
add validating-data-from-the-controller.rst
Fix possessive form
Update simple-acl-controlled-application.rst

There appears to be a duplicate of configuration suggestions so I've recommend a clean up and some rewording.
Update simple-acl-controlled-application.rst
Update simple-acl-controlled-application.rst
Merge pull request #1512 from lordg/patch-3

Update simple-acl-controlled-application.rst
Using generic version of calling a class name

Instead of using `$this->data['User']` changed to a generic version : `$this->data[$this->alias]`
Merge pull request #1517 from karmicdice/patch-2

Using generic version of calling a class name Ref: #4043
[fr] follow #1517

Using generic version of calling a class name Ref: #4043
[fr] follow #1512

Update simple-acl-controlled-application.rst