First quick Sure rebrand (#74)

* First cut of smallest rebrand, pending icons

* Leave SQL schema tokens/user names the same for now

* First batch of logos

* Release notes/what's new

* /releases missing

* redirect_uri for sureapp://

* Padded logo

* Test the correct /releases URL

* Missed a few mobile URIs

* Some icons/asssets from /website/ repo

* Seed/sample data user @sure.local now

* New screenshot

* Want to keep their legal "boilerplate" from the upstream repo

test/controllers/pages_controller_test.rb

@@ -26,7 +26,7 @@ class PagesControllerTest < ActionDispatch::IntegrationTest
     get changelog_path
     assert_response :ok
     assert_select "h2", text: "Release notes unavailable"
-    assert_select "a[href='https://github.com/maybe-finance/maybe/releases']"
+    assert_select "a[href='https://github.com/we-promise/sure/releases']"
   end
 
   test "changelog with incomplete release notes" do