Prevents flavors to be deleted when reusing a name

Adds an extra check to the EditFlavor form
in order to avoid losing the flavor if an
existing name is setted as the new name.

This control is needed because the current
edit implementation is based in a
delete-create action.

Change-Id: I4251c64fa4719831a1ed949bf95349a350dd303d
Fixes: bug #1133254
Merge "Prevents flavors to be deleted when reusing a name" into stable/folsom
Final versioning for 2012.2.4

Change-Id: Ic9ee9a7336c8f5f64ad4700c0322653e331c10bb
Bump version to 2012.2.5

Change-Id: Ibf237525fc86d5ba2129620f58d574685a713782
piston css
Merge pull request #2 from fattarsi/updates2

piston css
no double slash
Merge pull request #3 from fattarsi/branding

no double slash
use piston favicon, more verbose piston stylesheet info
Merge pull request #4 from joshuamckenty/uservoice

Uservoice widget
Added javascript for default uservoice tab.
Merge pull request #5 from lloydde/extra-branding

use piston favicon, more verbose piston stylesheet info
Changing uservoice forum to a piston one.
DOH. Adding missing comma.
Merge pull request #6 from joshuamckenty/uservoice

Changing uservoice forum to a piston one.
piston js
Merge pull request #7 from joshuamckenty/uservoice

DOH. Adding missing comma.
Move uservoice tab over to the left
Merge pull request #8 from fattarsi/910

piston js
Merge pull request #9 from ChristopherMacGown/move_uv_tab

Move uservoice tab over to the left