Adding a CONTRIBUTING document

Adding a CONTRIBUTING document to take advantages of this:
https://github.com/blog/1184-contributing-guidelines
967943 - changeset apply - error if view publish/refresh in progress

This commit contains changes to raise an error if the user
attempts to apply (e.g promote) a changeset that contains
a content view that is currently being published or refreshed.
add comps files for fedora19

copy fedora18 to fedora19 and remove those packages which made it to main Fedora 19
967943 - improve strings for translations
967943 - translate the taskstatus type
968054 - fixed showing default view on promotion page
task_status doesnt need a user

(re)indexing will fail if this is te case
Merge pull request #2383 from jlsherrill/CV_list

968054 - fixed showing default view on promotion page
961517 - fix order of params so account page always displays.
859443 - fixing multi-select on OSX in old tupane.
965200 - sync plans cannot be assigned to products
Merge pull request #2380 from bbuckingham/967943

967943 - changeset apply - error if view publish/refresh in progress
Merge pull request #2385 from jlsherrill/reindex

task_status doesnt need a user
Merge pull request #2388 from waldenraines/961517

961517 - fix order of params so account page always displays.
Nutupane - Allowing customization of shown columns in details mode.

The previous assumption was that the first column would always be
the column shown when viewing the details of an item. To allow this
to be more flexible, a controller can now specify which columns
specifically that are shown when details are open.
Merge pull request #2391 from waldenraines/859443

859443 - fixing multi-select on OSX in old tupane.
Issue 1712 - Incorrect error notification when creating user

No need to validate rolename when role  == self_role
Merge pull request #2393 from mptap/sync_plans_assgn

965200 - sync plans cannot be assigned to products
Travis - Setting LDAP Fluff version to keep new version from being
pulled in and breaking the ability to run tests.
960552 - publish button shouldn't be displayed for read only