Bug fix:#67 add M for template memory

v2-v3 make the commit message less that 80 chars per line

v1-v2 add the commit message

this issue is in the list template page, template memory need to
have a unit just like "M, G" etc, so add a unit after the memory
Signed-off-by: zhoumeina <zhoumein@linux.vnet.ibm.com>
fix bug:#51 guest tab contains 404 file not find error

v2-v3 make the commit message less than 80 chars per line.
v1-v2 amend the commit message

the issue is caused by that in navbar.css one background url can
not be found that is ../images/theme-default/nav-bg.png and
this png is needed. so add a png image cause browser can find
the image.
Signed-off-by: zhoumeina <zhoumein@linux.vnet.ibm.com>
Issue #43: UI Reports Error When Pressing Enter Key in Creating VM Form

Browser redirects to an error page when pressing Enter Key in Creating
VM Form. It's the default behavior of an HTML form when pressing Enter
Key to submit the form. However, we do not want to submit it directly.
Instead, we use Ajax to submit it to make our UI consistent.

    In this patch, we disable the default behavior of an HTML form. To
always return false; will prevent the form from being submitted in the
submit event listener.

    Tested on IE9, IE10, Firefox 22, Chrome, and Safari.

Signed-off-by: Hongliang Wang <hlwang@linux.vnet.ibm.com>