Update contribute.lang (127 new strings)

git-svn-id: https://svn.mozilla.org/projects/mozilla.com/trunk/locales/he@132065 4eb1ac78-321c-0410-a911-ec516a8615a5
Remove one placeholder string (contribute.lang)

git-svn-id: https://svn.mozilla.org/projects/mozilla.com/trunk/locales/he@132070 4eb1ac78-321c-0410-a911-ec516a8615a5
contribute.lang: add new strings for /thankyou

git-svn-id: https://svn.mozilla.org/projects/mozilla.com/trunk/locales/he@132073 4eb1ac78-321c-0410-a911-ec516a8615a5