Add URL rewriting for lighttpd

Works with 2.4.x build.

Credits: http://www.guyrutenberg.com/2009/01/24/configuring-lighttpd-for-cakephp/comment-page-1/#comment-243532
add a note for deleteAll()
add a note for deleteAll()
Merge pull request #992 from Spacy/master

add a note for deleteAll()
Clean up formatting.

Fewer callouts is better.
Rewrite „Inspecting the request“

I used en dashed instead of hyphens. Please tell me if it isn't allowed to use extended ASCII codes.
Merge pull request #821 from shockone/patch-3

Rewrite „Inspecting the request“
Clarify file location

Clarified that edits should go in /View/Users/login.ctp
Merge pull request #994 from xiaoxu193/patch-2

Clarify file location
Update url-rewriting.rst
Merge pull request #788 from Stefan---/patch-1

Add URL rewriting for lighttpd