Update plugin_vulns.xml

Add vulnerabilites for wp125, wp-symposium, wp-download-manager, digg-digg, ssquiz, funcapatcha, wili-language, wordpress-seo.

Correct fixed_in version for a vulnerability in easy-adsense-lite.

Correct indent.
Merge pull request #218 from cervoise/patch-4

Update plugin_vulns.xml (travis build will fail)