Search for image links only in change and diff screens
Search for image links only in change and diff screens

Other screens do not display comments and hence there are not image
links which should be inlined. For those other screens it makes no
sense to request the imagare user preferences from the server.

Change-Id: Id533d5348043729d37e02fb2cbe7f4f390dd0cc6
Signed-off-by: Edwin Kempin <d43fb6c98c97e553b671ed9a9318100f1de386e7@google.com>

GerritCodeReview/plugins_imagare,GerritCodeReview/plugins_imagare,GerritCodeReview/plugins_imagare