Add missing Firefox Addons campaign

public/locales/en-US/activate.ftl

@@ -48,10 +48,6 @@ activities-homepage-description = Contribute your skills and learn from others.
 activities-listing-title = Activities
 activities-listing-description = We call these activities “evergreen” because they’re always important, relevant to Mozilla’s mission and need your participation now!
 
-dark-funnel-title = Become a Dark Funnel Detective!
-dark-funnel-description = Shed light on the Dark Funnel by searching for and reporting websites that have unauthorized download buttons as part of the Dark Funnel Campaign!
-dark-funnel-duration = September 17-24 2018
-
 quantum-sprint-title = Firefox Quantum Sprint
 quantum-sprint-description = Firefox Quantum is soon to be launched and this is our opportunity to make Firefox rise again. Participate in the Firefox Quantum Sprint and make a difference by ensuring that Firefox runs smoothly in your region.
 quantum-sprint-duration = October 2-8 2017
@@ -72,6 +68,14 @@ firefox-support-title = Firefox Support Sprint
 firefox-support-description = Help users who are asking for support in reviews on the Play Store. Join Mozillians around the world for a week of answering questions and helping users have a great experience!
 firefox-support-duration = June 2-9 2018
 
+firefox-addons-title = Add-ons Localization Campaing
+firefox-addons-description = Join forces with your fellow Mozillians and help top Firefox Add-Ons by localizing them into the top 10 languages.
+firefox-addons-duration = June 14 - July 2 2018
+
+dark-funnel-title = Become a Dark Funnel Detective!
+dark-funnel-description = Shed light on the Dark Funnel by searching for and reporting websites that have unauthorized download buttons as part of the Dark Funnel Campaign!
+dark-funnel-duration = September 17-24 2018
+
 firefox-fights-title = Firefox Fights for you
 firefox-fights-description = Help spread the word about Firefox by making your own "Firefox Fights For You" video in your own language and sharing it with world!
 firefox-fights-duration = January 11 - February 3 2019

src/components/Campaigns/CampaignsListing.js

@@ -67,6 +67,13 @@ class CampaignsListing extends Component {
               durationKey="dark-funnel-duration"
               linkTarget="https://events.mozilla.org/darkfunnelEN"
             ></CampaignTile>
+            <CampaignTile
+              titleImage="/images/firefox-addons.jpg"
+              titleKey="firefox-addons-title"
+              descriptionKey="firefox-addons-description"
+              durationKey="firefox-addons-duration"
+              linkTarget="https://discourse.mozilla.org/t/the-add-on-localization-campaign-is-happening-join-us/29432"
+            ></CampaignTile>
             <CampaignTile
               titleImage="/images/firefox-support.jpg"
               titleKey="firefox-support-title"