minor #19774 [TwigBundle] Use vector images on the exception page (nicolas-grekas)
minor #19774 [TwigBundle] Use vector images on the exception page (nicolas-grekas)

This PR was merged into the 3.2-dev branch.

Discussion
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[TwigBundle] Use vector images on the exception page

| Q             | A
| ------------- | ---
| Branch?       | master
| New feature?  | yes
| Tests pass?   | yes
| Fixed tickets | #19756
| License       | MIT

Before:
![capture du 2016-08-29 15-40-37](https://cloud.githubusercontent.com/assets/243674/18053289/f5ab33cc-6dfe-11e6-94cf-720098c214d8.png)

After:
![capture du 2016-08-29 21-00-36](https://cloud.githubusercontent.com/assets/243674/18063547/b274f520-6e2b-11e6-95cd-180ccb4cbf28.png)

Ghost SVG provided by  @patrick-mcdougle, thanks to him.

Commits
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1a3a4be [TwigBundle] Use vector images on the exception page

symfony/framework-bundle