#1348 added initial updates to step 2 of newsletters module
added function fo step 1, 3, 4 and initial on step 2 and step 5 of marketing action
1348 added updates to step 2 page -- search email, email list view with pagination
finalize step 2; added initial updates on step 5; created article generator; initial on management command; update templates based on newsletter object
added updates to step 5 page; fixes on templates and update to management command for sending email
finalized newsletters
merge newsletter generator branch and fix merge conflicts