Images are not visible in custom HTML blocks for the users that has administrative privilages

When user has administrative permissions he/she doesn't see images added to the header/footer custom HTML block.

For, example, if you add following custom HTML in to the header block:

<a href="http://www.oracle.com/javaone/ru-ru/index.html"><img src="http://media-dl.javatalks.ru/s/partners/oracle/728x90-01.gif" style="border:0px;"/></a>

regular users will see this image, but for the users logged in with administrative permissions, above text will be hidden (see result css style, applied to the "a" and "img" tags).

Expected result: all users should see custom JS/HTML set buy the Administrators. Moreover, supplied JS/HTML must be applied immediately after you click "Save" button on "Paste your HTML/JavaScript here" dialog.

This issue is related to the following tasks: http://jira.jtalks.org/browse/JC-1248