Fix incorrectly encoded headers in MailTransport.

When encoded values are present in header fields, they need to have
newlines removed as leaving the newlines in place and interfere with
delivery on Qmail based SMTP servers.

Fixes #2209
Add missing return type
Merge pull request #2282 from bcrowe/hotfix-returnType

Add missing return type
Remove CRLF from To headers in MailTransport.

Like other header fields To should not contain CRLF.

Refs #2209
Fix formatting of decimal values when there is no fractionSymbol.

When a currency format does not include a fractionSymbol it should be
able to format fractional values.

Fixes #2253
Split existing tests up, and add tests for Router based image URL's

Refs #2233
Fix missing HTML encoding on URL's generated by Html->meta().

The input URL was not correctly handled as an asset URL and thus was
not correctly HTML or URL escaped. This created invalid HTML when
favicon URLs included query string arguments.

Refs #2233
Added Api and Crud
Merge branch 'master' of https://github.com/cakephp/cakephp