ENH: Update ITK logo.

Change-Id: Ic7c698c20e2917cfbc860a2b87a477381fff8480
STYLE: Remove box around CC logo.

Change-Id: I5f4d56d53341f869aaccca08eb70283cb34581be
Merge changes I5f4d56d5,Ic7c698c2

* changes:
  STYLE: Remove box around CC logo.
  ENH: Update ITK logo.