Add drawables.

rocket-chat-android-widgets/src/main/res/drawable/ic_hashtag_black_24dp.xml

+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M20.037,10.206 L17.1666,10.206 L17.1666,13.7939 L20.037,13.7939 L20.037,17.3819
+            L17.1666,17.3819 L17.1666,20.3719 L13.7222,20.3719 L13.7222,17.3819
+            L10.2778,17.3819 L10.2778,20.3719 L6.83342,20.3719 L6.83342,17.3819
+            L3.96302,17.3819 L3.96302,13.794 L6.83335,13.794 L6.83335,10.2061
+            L3.96302,10.2061 L3.96302,6.61814 L6.83335,6.61814 L6.83335,3.62815
+            L10.2778,3.62815 L10.2778,6.61808 L13.7222,6.61808 L13.7222,3.62815
+            L17.1666,3.62815 L17.1666,6.61808 L20.037,6.61808 L20.037,10.206 Z
+            M10.5639,10.2034 L10.5639,13.7966 L13.4361,13.7966 L13.4361,10.2034
+            L10.5639,10.2034 Z" />
+</vector>
\ No newline at end of file

rocket-chat-android-widgets/src/main/res/drawable/ic_lock_black_24dp.xml

+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M18.4596,11.5696 C18.2364,11.3465,17.9655,11.235,17.6466,11.235 L17.2642,11.235
+            L17.2642,8.93953 C17.2642,7.47311,16.7384,6.21399,15.6863,5.16197
+            C14.6343,4.10991,13.3753,3.58388,11.9087,3.58388
+            C10.4421,3.58388,9.18288,4.10991,8.13098,5.16193
+            C7.07892,6.21399,6.55305,7.47307,6.55305,8.93953 L6.55305,11.235 L6.17056,11.235
+            C5.85188,11.235,5.58084,11.3465,5.35767,11.5696
+            C5.13449,11.7927,5.02295,12.0637,5.02295,12.3827 L5.02295,19.2685
+            C5.02295,19.5872,5.13453,19.8583,5.35767,20.0815
+            C5.58084,20.3045,5.85188,20.4161,6.17056,20.4161 L17.6469,20.4161
+            C17.9658,20.4161,18.2366,20.3046,18.4599,20.0815
+            C18.6828,19.8583,18.7946,19.5872,18.7946,19.2685 L18.7946,12.3825
+            C18.7948,12.0638,18.6828,11.7928,18.4596,11.5696 Z M14.9691,11.235
+            L8.84837,11.235 L8.84837,8.93953 C8.84837,8.09477,9.14729,7.37345,9.745,6.77582
+            C10.3428,6.17811,11.064,5.87931,11.9088,5.87931
+            C12.7538,5.87931,13.4748,6.17806,14.0726,6.77582
+            C14.6702,7.37341,14.9691,8.09477,14.9691,8.93953 L14.9691,11.235 Z" />
+</vector>
\ No newline at end of file