Folder restructure (#6304)

* Remove ui/app/keychains/

* Remove ui/app/img/ (unused images)

* Move conversion-util to helpers/utils/

* Move token-util to helpers/utils/

* Move /helpers/*.js inside /helpers/utils/

* Move util tests inside /helpers/utils/

* Renameand move confirm-transaction/util.js to helpers/utils/

* Move higher-order-components to helpers/higher-order-components/

* Move infura-conversion.json to helpers/constants/

* Move all utility functions to helpers/utils/

* Move pages directory to top-level

* Move all constants to helpers/constants/

* Move metametrics inside helpers/

* Move app and root inside pages/

* Move routes inside helpers/

* Re-organize ducks/

* Move reducers to ducks/

* Move selectors inside selectors/

* Move test out of test folder

* Move action, reducer, store inside store/

* Move ui components inside ui/

* Move UI components inside ui/

* Move connected components inside components/app/

* Move i18n-helper inside helpers/

* Fix unit tests

* Fix unit test

* Move pages components

* Rename routes component

* Move reducers to ducks/index

* Fix bad path in unit test

3 files changed, 52 insertions, 0 deletions

diff --git a/ui/app/pages/add-token/token-list/token-list-placeholder/index.js b/ui/app/pages/add-token/token-list/token-list-placeholder/index.js
new file mode 100644
index 000000000..b82f45e93
--- /dev/null
+++ b/ui/app/pages/add-token/token-list/token-list-placeholder/index.js
@@ -0,0 +1,2 @@
+import TokenListPlaceholder from './token-list-placeholder.component'
+module.exports = TokenListPlaceholder
diff --git a/ui/app/pages/add-token/token-list/token-list-placeholder/index.scss b/ui/app/pages/add-token/token-list/token-list-placeholder/index.scss
new file mode 100644
index 000000000..cc495dfb0
--- /dev/null
+++ b/ui/app/pages/add-token/token-list/token-list-placeholder/index.scss
@@ -0,0 +1,23 @@
+.token-list-placeholder {
+  display: flex;
+  align-items: center;
+  padding-top: 36px;
+  flex-direction: column;
+  line-height: 22px;
+  opacity: .5;
+
+  &__text {
+    color: $silver-chalice;
+    width: 50%;
+    text-align: center;
+    margin-top: 8px;
+
+    @media screen and (max-width: 575px) {
+      width: 60%;
+    }
+  }
+
+  &__link {
+    color: $curious-blue;
+  }
+}
diff --git a/ui/app/pages/add-token/token-list/token-list-placeholder/token-list-placeholder.component.js b/ui/app/pages/add-token/token-list/token-list-placeholder/token-list-placeholder.component.js
new file mode 100644
index 000000000..20f550927
--- /dev/null
+++ b/ui/app/pages/add-token/token-list/token-list-placeholder/token-list-placeholder.component.js
@@ -0,0 +1,27 @@
+import React, { Component } from 'react'
+import PropTypes from 'prop-types'
+
+export default class TokenListPlaceholder extends Component {
+  static contextTypes = {
+    t: PropTypes.func,
+  }
+
+  render () {
+    return (
+      <div className="token-list-placeholder">
+        <img src="images/tokensearch.svg" />
+        <div className="token-list-placeholder__text">
+          { this.context.t('addAcquiredTokens') }
+        </div>
+        <a
+          className="token-list-placeholder__link"
+          href="https://metamask.zendesk.com/hc/en-us/articles/360015489031"
+          target="_blank"
+          rel="noopener noreferrer"
+        >
+          { this.context.t('learnMore') }
+        </a>
+      </div>
+    )
+  }
+}