Hi there!

This is a meta-issue with a list of things that we need to do in order to extract the Templating component from the core to his own repo (symfony/Templating).
The idea is to extract the Templating component in 2.8, so in order to do this we need to:

• Remove all the content from src/Symfony/Component/Templating and add symfony/templating as a dependency to keep BC. (see PR).
• Make the symfony/Templating repo writable.
• Move all code related to the Templating component to symfony/templating-bundle (inital work can be found here).

In 3.0 we need to:

• Remove the BC layer, remove symfony/templating dependency from the core.

If i'm missing something feel free to tell me. :)