Bug 33785: Some UI fixes to the orderreceive.tt modal

Bug 33785: Some UI fixes to the orderreceive.tt modal

To test:
1. Apply patch
2. Follow the steps in Bug 8179 to generate the modal on orderreceive.tt
3. Check that the following issues have been corrected:
    -The select2 dropdown for #bookfund is splitting onto multiple lines in the modal.
    -The modal header has a green line extending through it.
    -At smaller screen sizes the modal close button ( upper right corner of modal ) drops down below the h4. It should stay on the same line as the h4.
    -The modal is not centered on the screen.
    -The toogle inactive/active checkbox can become it's own list element.
    -The #current-fund can become a hint

Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>