Fix issue with blank email query param
Fix issue with blank email query param

rememberlenny/email-newsletter-stand,laeroah/SAM,yogadog/rails-project,cybergami/rails4-starterkit,yogadog/rails-project,usmanajmal3/Testing,Gerstep/cine,aninder/rails4-starterkit,Gerstep/cine,Ilinicz/cupofme,rememberlenny/email-newsletter-stand,rememberlenny/newsletterstand,girlIT/Weekend,MartinHeimbring/awesome_starter_app,usmanajmal3/Testing,usmanajmal3/Testing,laeroah/SAM,aninder/rails4-starterkit,mwahmed/picxel,jocelyndrean/glowing-avenger,kbarre123/starterkits_rails4,kbarre123/starterkits_rails4,jocelyndrean/glowing-avenger,nfelix/mvmt,rememberlenny/newsletterstand,MonikaMahanthappa/lunch-box,Ilinicz/cupofme,mwahmed/picxel,kbarre123/starterkits_rails4,samuels410/simply_notify,MonikaMahanthappa/lunch-box,rememberlenny/email-newsletter-stand,Nahrae/nahrae-portfolio,nfelix/mvmt,nfelix/mvmt,MonikaMahanthappa/lunch-box,laeroah/SAM,starterkits/rails4-starterkit,andrewthefish/ImageScrambler,aninder/rails4-starterkit,rememberlenny/newsletterstand,rememberlenny/rails4-starterkit,Nahrae/nahrae-portfolio,jocelyndrean/glowing-avenger,starterkits/rails4-starterkit,girlIT/Weekend,cybergami/cybergami.com.2.0,ak15/beshare,andrewthefish/ImageScrambler,Nahrae/nahrae-portfolio,cybergami/cybergami.com.2.0,verdi327/jumpstartvegan,samuels410/simply_notify,verdi327/jumpstartvegan,MartinHeimbring/awesome_starter_app,starterkits/rails4-starterkit,Gerstep/cine,MartinHeimbring/awesome_starter_app,cybergami/rails4-starterkit,ak15/beshare_ak15,ak15/beshare,ak15/beshare_ak15,rememberlenny/rails4-starterkit