added pair screen, home screen, and channels screen

desktop_app/ui/assets/channels_banner.txt

@@ -0,0 +1,8 @@
+       _                            _     
+      | |                          | |    
+   ___| |__   __ _ _ __  _ __   ___| |___ 
+  / __| '_ \ / _` | '_ \| '_ \ / _ \ / __|
+ | (__| | | | (_| | | | | | | |  __/ \__ \
+  \___|_| |_|\__,_|_| |_|_| |_|\___|_|___/
+                                          
+                                          

desktop_app/ui/assets/global.tcss

@@ -0,0 +1,9 @@
+.banner {
+    padding: 1;
+    width: 100%;
+    background: $primary 50%;
+    color: $primary-lighten-1;
+    text-align: center;
+    margin: 1;
+    text-style: bold underline;
+}

desktop_app/ui/assets/pair_screen.tcss

@@ -1,17 +1,17 @@
 PairScreen {
     align: center middle;
-}
 
-EffectLabel {
-    min-width: 50;
-    text-align: center;
-    text-style: bold;
+    EffectLabel {
+        min-width: 50;
+        text-align: center;
+        text-style: bold;
+    }
 }
 
 #middle {
     border: $success round;
-    width: 60;
-    height: 28;
+    width: 45;
+    height: 15;
 
     padding: 0 1 1 1;
 
@@ -20,20 +20,8 @@ EffectLabel {
         margin: 0 1;
     }
 
-    DataTable {
-        margin-top: 1;
-    }
-
     LoadingIndicator {
         height: 1;
         margin-top: 1;
     }
-
-    DataTable {
-        height: 5;
-    }
-
-    Button {
-        margin: 2 0 0 1;
-    }
 }