Adding a CONTRIBUTING document

Adding a CONTRIBUTING document to take advantages of this:
https://github.com/blog/1184-contributing-guidelines
require ruby193scl-wrapper-ruby

but rather using path, because the name of package can be changed in RHSCLv2
And yes, we actually do not use scl_rake in spec
951228 - Systems Custom Information - Keyname and value needs to
enforce maximum length restrictions

951228 - tests for changes

951228 - fixing syntax error
change scl format to allow more commands under one scl session
Merge pull request #2363 from komidore64/bug_951228

951228 - Systems Custom Information - Keyname and value needs to enforce maximum length restrictions
Adding success notifications for creating and removing custom information keynames.
Merge pull request #2376 from omaciel/morenotifs

[FEEDBACK_PLEASE] Adds success notifs for creating and removing custom information keynames.
966708 - Menu: show manage orgs link without an org selected.
962484 - Manage Orgs: remove unnecessary require_org.
Merge pull request #2379 from waldenraines/966708-962484

Fix Manage org link not displayed and 403 if you don't have an organization selected
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.
Merge pull request #2370 from xsuchy/pull-req-ruby193scl-wrapper-ruby3

require ruby193scl-wrapper-ruby
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
961128 - removing title element on allowed org list.
Merge pull request #2386 from waldenraines/961128

961128 - removing title element on allowed org list.
Merge pull request #2383 from jlsherrill/CV_list

968054 - fixed showing default view on promotion page