[proposal] Current namespace

[Davide Bellini]

What about introduce a reserved keyword for @extends, @include, etc. that represents the current theme? So, after you rename the theme, you haven't to replace the name in all views.

An example with a theme named "caffeinated":

// Now
@extends('caffeinated::layout')
@include('caffeinated::layout')

// Proposal
@extends('current::layout')
@include('current::layout')