UI improvements (#192)

* bitchat logo

* improve ui

app/src/main/java/com/bitchat/android/ui/ChatHeader.kt

@@ -166,7 +166,7 @@ fun PeerCounter(
         }
         
         Icon(
-            imageVector = Icons.Default.Person,
+            imageVector = Icons.Default.Group,
             contentDescription = "Connected peers",
             modifier = Modifier.size(16.dp),
             tint = if (isConnected) Color(0xFF00C851) else Color.Red
@@ -425,7 +425,7 @@ private fun MainHeader(
             verticalAlignment = Alignment.CenterVertically
         ) {
             Text(
-                text = "bitchat*",
+                text = "bitchat/",
                 style = MaterialTheme.typography.headlineSmall,
                 color = colorScheme.primary,
                 modifier = Modifier.singleOrTripleClickable(
@@ -434,7 +434,7 @@ private fun MainHeader(
                 )
             )
             
-            Spacer(modifier = Modifier.width(8.dp))
+            Spacer(modifier = Modifier.width(2.dp))
             
             NicknameEditor(
                 value = nickname,