ajaxorg/cloud9 — pull request #606 by sergi (2011-12-02 10:13:17+00:00)
Title: [Vim] Fix Ctrl-D and Ctrl-U scrolling position. Closes #493

When doing pgup/pgdown in vim, the position in the screen where the
cursor is originally is kept as the scrolling happens.

To be reviewed by @zefhemel