added docs for https://github.com/zendframework/zf2/pull/3990
Update zend.mail.attachments.rst

Rewrote the whole page since it was just a copy of ZF1 docs with namespaces.
correct some class names
Merge branch 'hotfix/#881'

Close #881
Start of Portuguese Traslation

User Guide -Skeleton Application
Title Corrections
Add documentation for NumberParse filter

Related to zendframework/zf2/#4493 and zendframework/zf2#4510
Update service manager config key for the identity plugin()

'alias' key should be 'aliases'
Some Typo Fixes
Fixed validator listing and attaching.
Update for "Using Zend\Navigation in your Album Module"

- line numbers to code examples added
- links to component and view helper added
- small updates for code examples
Updates for "Using Zend\Paginator in your Album Module"

- links to components added
- format for SQL code fixed
Typos fixed
Fix typo in SharedEventManagerInterface path
Fixed incorrect end result being displayed in CamelCaseToX filters
Update zend.cache.storage.adapter.rst

Fixed misspelling
Update zend.validator.regex.rst

Added missing round brackets
Update zend.validator.regex.rst
Update zend.validator.regex.rst
Typo mistake