Clearer documentation on how to use dropdown menu

Add the required JavaScript code to activate the dropdown menu
Minor cleanup such as using double quotes instead of single quotes in HTML markup
Cleanup leanModal.js

Proper indentation
Use double-quotes instead of single-quotes
Extract open modal behavior into a separate function
Allow directly calling openModal on a modal element

This will allow developers to call the modal on document ready
Add way to open modal without clicking into documentation
Removed debugger
Synchronize class separators for modal elements

modal_close becomes modal-close
lean_overlay becomes lean-overlay
fixed spacing in nav dropdown code demo
Merge branch 'feature/open-modal-without-clicking' of https://github.com/afifsohaili/materialize into afifsohaili-feature/open-modal-without-clicking
Merge branch 'feature/open-modal-without-clicking' of https://github.com/afifsohaili/materialize
compiled jade
Merge branch 'afifsohaili-feature/open-modal-without-clicking'
added more description to programatic modal open
Bumped to v0.92.0
Readme updated
Changelog updated
Fixed version typo
Added Portugese pages
Added Spanish Pages