Add templates to all locales with Get Involved page

git-svn-id: https://svn.mozilla.org/projects/mozilla.com/trunk/locales/he@132749 4eb1ac78-321c-0410-a911-ec516a8615a5
Add README file to contribute-2015 folder

git-svn-id: https://svn.mozilla.org/projects/mozilla.com/trunk/locales/he@132750 4eb1ac78-321c-0410-a911-ec516a8615a5
Update journalism.txt

git-svn-id: https://svn.mozilla.org/projects/mozilla.com/trunk/locales/he@132767 4eb1ac78-321c-0410-a911-ec516a8615a5
Fix error in writing_journalism.txt

git-svn-id: https://svn.mozilla.org/projects/mozilla.com/trunk/locales/he@132781 4eb1ac78-321c-0410-a911-ec516a8615a5