Allows users to delete usernames

app/src/main/java/com/vitorpamplona/amethyst/ui/actions/NewUserMetadataView.kt

@@ -61,7 +61,7 @@ fun NewUserMetadataView(onClose: () -> Unit, account: Account) {
                             postViewModel.create()
                             onClose()
                         },
-                        postViewModel.userName.value.isNotBlank()
+                        true
                     )
                 }
 

app/src/main/java/com/vitorpamplona/amethyst/ui/navigation/DrawerContent.kt

@@ -150,6 +150,7 @@ fun ProfileContent(baseAccountUser: User, modifier: Modifier = Modifier, scaffol
                         }
                     })
             )
+            if (accountUser.bestDisplayName() != null) {
                 Text(
                     accountUser.bestDisplayName() ?: "",
                     modifier = Modifier.padding(top = 7.dp).clickable(onClick = {
@@ -163,6 +164,8 @@ fun ProfileContent(baseAccountUser: User, modifier: Modifier = Modifier, scaffol
                     fontWeight = FontWeight.Bold,
                     fontSize = 18.sp
                 )
+            }
+            if (accountUser.bestUsername() != null) {
                 Text(" @${accountUser.bestUsername()}", color = Color.LightGray,
                     modifier = Modifier.padding(top = 15.dp).clickable(onClick = {
                         accountUser.let {
@@ -171,7 +174,9 @@ fun ProfileContent(baseAccountUser: User, modifier: Modifier = Modifier, scaffol
                         coroutineScope.launch {
                             scaffoldState.drawerState.close()
                         }
-            }))
+                    })
+                )
+            }
             Row(modifier = Modifier.padding(top = 15.dp).clickable(onClick = {
                 accountUser.let {
                     navController.navigate("User/${it.pubkeyHex}")

app/src/main/java/com/vitorpamplona/amethyst/ui/note/PubKeyFormatter.kt

@@ -7,6 +7,6 @@ fun ByteArray.toShortenHex(): String {
 }
 
 fun String.toShortenHex(): String {
-  return replaceRange(6, length-6, ":")
+  return replaceRange(8, length-8, ":")
 }
 

app/src/main/java/com/vitorpamplona/amethyst/ui/note/UsernameDisplay.kt

@@ -29,16 +29,7 @@ fun UsernameDisplay(baseUser: User, weight: Modifier = Modifier) {
   val userState by baseUser.live().metadata.observeAsState()
   val user = userState?.user ?: return
 
-  if (user.bestUsername() != null || user.bestDisplayName() != null) {
+  if (user.bestUsername() != null && user.bestDisplayName() != null) {
-    if (user.bestDisplayName().isNullOrBlank()) {
-      Text(
-        "@${(user.bestUsername() ?: "")}",
-        fontWeight = FontWeight.Bold,
-        maxLines = 1,
-        overflow = TextOverflow.Ellipsis,
-        modifier = weight
-      )
-    } else {
     Text(
       user.bestDisplayName() ?: "",
       fontWeight = FontWeight.Bold,
@@ -50,7 +41,22 @@ fun UsernameDisplay(baseUser: User, weight: Modifier = Modifier) {
       overflow = TextOverflow.Ellipsis,
       modifier = weight
     )
-    }
+  } else if (user.bestDisplayName() != null) {
+    Text(
+      user.bestDisplayName() ?: "",
+      fontWeight = FontWeight.Bold,
+      maxLines = 1,
+      overflow = TextOverflow.Ellipsis,
+      modifier = weight
+    )
+  } else if (user.bestUsername() != null) {
+    Text(
+      "@${(user.bestUsername() ?: "")}",
+      fontWeight = FontWeight.Bold,
+      maxLines = 1,
+      overflow = TextOverflow.Ellipsis,
+      modifier = weight
+    )
   } else {
     Text(
       user.pubkeyDisplayHex(),