First attempt at creating a first-run page

_locales/en/messages.json

 {
   "add": {
     "description": "This is the label for the 'Add' buttons.", 
     "message": "Add"
   }, 
   "add_domain_button": {
     "message": "Add domain"
   }, 
   "add_filter_button": {
     "message": "Add filter"
@@ skipping 87 matching lines @@
     "message": "Failed, not a valid filters list"
   }, 
   "filters_subscription_lastDownload_invalidURL": {
     "message": "Failed, not a valid address"
   }, 
   "filters_viewList_label": {
     "message": "View list"
   }, 
   "firstRun_acceptableAdsExplanation": {
     "description": "This is the explanation of the acceptable ads feature", 
-    "message": "<strong>Adblock Plus automatically blocks annoying ads.</strong> Adblock Plus has also been configured to <a>allow some advertising</a> that is considered non-annoying. These ads have to follow <a>strict guidelines</a>, e.g. they cannot be animated and there has to be clear separation between content and ads. By allowing some carefully selected ads you support websites that rely on advertising but choose to do it in a non-intrusve way. You can <a>disable</a> this feature at any time."
+    "message": "<strong>Adblock Plus will always block annoying ads.</strong> But we don't want to hurt websites with plain and unobtrusive ads. That's why we have established <a>strict guidelines</a> to identify acceptable ads, and are not blocking these by default. You can always <a>disable</a> this if you don't want to see any ads at all."
+  }, 
+  "firstRun_changelog": {
+    "description": "Page subtitle, links to the changelog", 
+    "message": "See what's new"
   }, 
   "firstRun_feature_acceptableAds": {
     "description": "One of the bullet points in the features list", 
-    "message": "Support websites with acceptable ads (read below for more information)"
+    "message": "Support websites with acceptable ads (more below)"
   }, 
   "firstRun_feature_betterSurfing": {
     "description": "One of the bullet points in the features list", 
-    "message": "Surf the web without annoying ads"
+    "message": "Enjoy the web without annoying ads"
   }, 
-  "firstRun_feature_improvements": {
+  "firstRun_feature_videoAds": {
     "description": "One of the bullet points in the features list", 
-    "message": "Many other improvements (<a>view changelog</a>)"
+    "message": "Watch videos without commercial interruptions"
+  }, 
+  "firstRun_features_heading": {
+    "description": "Text above the features list", 
+    "message": "With Adblock Plus you can:"
   }, 
   "firstRun_share1": {
     "description": "First line of text appearing above Facebook/Twitter buttons", 
-    "message": "Do you like blocking ads?"
+    "message": "Do you think Adblock Plus"
   }, 
   "firstRun_share2": {
     "description": "Second line of text appearing above Facebook/Twitter buttons", 
-    "message": "Please spread the word!"
+    "message": "is worth sharing? Please do!"
   }, 
   "firstRun_share3": {
     "description": "Alternative text to appear above Facebook/Twitter buttons", 
     "message": "Adblock Plus is free and open source. Please support us:"
   }, 
   "firstRun_share3_donate": {
     "description": "'Donate' button text", 
     "message": "Donate"
   }, 
   "firstRun_share3_or": {
@@ skipping 82 matching lines @@
     "message": "Subscription title:"
   }, 
   "update_now": {
     "message": "Update now"
   }, 
   "whitelisted_domains": {
     "description": "This is a tab heading.", 
     "message": "Whitelisted domains"
   }
 }