[Toaster] [review request V3] toaster: add rev dep column to image detail pages

[Dave Lerner]

Comment: Version 3 has 
    commit message format & typo corrections,
    rebased to toaster-next as of 31Mar16,
    retested,
    pushed to the contrib branch below.

Poky Contrib Branch:  dlerner/9163-revdep-columns-for-customimage-pages
Target Branches: toaster-next master
Defect: 9163
Summary: toaster: add rev dep column to image detail pages

Commit
------
7ce5e52 toaster: add rev dep column to image detail pages
 
 bitbake/lib/toaster/orm/models.py                         |  7 +++++++
 bitbake/lib/toaster/toastergui/tables.py                  |  6 ++++++
 .../templates/snippets/pkg_revdependencies_popover.html   | 15 +++++++++++++++
 3 files changed, 28 insertions(+)