Docs: Move April security bulletin to new location.
Test: none

Change-Id: I623bca0338735840bf9b28b6253e1232c5a5ae85
diff --git a/src/security/bulletin/2017-04-01.jd b/en/security/bulletin/2017-04-01.html
similarity index 100%
rename from src/security/bulletin/2017-04-01.jd
rename to en/security/bulletin/2017-04-01.html