Adds loader to rewards welcome page

Resolves brave/brave-browser#1099

Author: NejcZdovc

browser/ui/webui/brave_webui_source.cc

@@ -221,6 +221,7 @@ void CustomizeWebUIHTMLSource(const std::string &name, content::WebUIDataSource*
         { "braveContributeDesc", IDS_BRAVE_UI_BRAVE_CONTRIBUTE_DESC },
         { "braveContributeTitle", IDS_BRAVE_UI_BRAVE_CONTRIBUTE_TITLE },
         { "braveRewards", IDS_BRAVE_UI_BRAVE_REWARDS },
+        { "braveRewardsCreatingText", IDS_BRAVE_UI_BRAVE_REWARDS_CREATING_TEXT },
         { "braveRewardsDesc", IDS_BRAVE_UI_BRAVE_REWARDS_DESC },
         { "braveRewardsOptInText", IDS_BRAVE_UI_BRAVE_REWARDS_OPT_IN_TEXT },
         { "braveRewardsSubTitle", IDS_BRAVE_UI_BRAVE_REWARDS_SUB_TITLE },

components/resources/brave_components_resources.grd

@@ -256,6 +256,7 @@
       <message name="IDS_BRAVE_UI_BRAVE_CONTRIBUTE_DESC" desc="">Set a monthly budget and browse normally. Your favorite sites get paid automatically.</message>
       <message name="IDS_BRAVE_UI_BRAVE_CONTRIBUTE_TITLE" desc="">Auto-Contribute</message>
       <message name="IDS_BRAVE_UI_BRAVE_REWARDS" desc="">Brave Rewards</message>
+      <message name="IDS_BRAVE_UI_BRAVE_REWARDS_CREATING_TEXT" desc="">Creating wallet</message>
       <message name="IDS_BRAVE_UI_BRAVE_REWARDS_DESC" desc="">Your attention is valuable. Earn by viewing privacy-respecting ads, and pay it forward to support content creators you love.</message>
       <message name="IDS_BRAVE_UI_BRAVE_REWARDS_OPT_IN_TEXT" desc="">Yes, I'm In!</message>
       <message name="IDS_BRAVE_UI_BRAVE_REWARDS_SUB_TITLE" desc="">Get Rewarded for Browsing!</message>

package-lock.json

@@ -94,7 +94,7 @@
     "babel-preset-react": "^6.24.1",
     "babel-preset-react-optimize": "^1.0.1",
     "babel-preset-stage-0": "^6.24.1",
-    "brave-ui": "^0.24.10",
+    "brave-ui": "^0.25.1",
     "css-loader": "^0.28.9",
     "csstype": "^2.5.5",
     "emptykit.css": "^1.0.1",