Do not add new account twice plus some minor changes

app/src/main/kotlin/com/tutpro/baresip/AccountActivity.kt

@@ -113,7 +113,7 @@ class AccountActivity : AppCompatActivity() {
             val config = try {
                 URL(url).readText()
             } catch (e: java.lang.Exception) {
-                Log.d(TAG, "Network request failed")
+                Log.d(TAG, "Failed to get account configuration from network")
                 null
             }
             if (config != null && !ctx.isFinishing) {

app/src/main/kotlin/com/tutpro/baresip/AccountsActivity.kt

@@ -73,7 +73,6 @@ class AccountsActivity : AppCompatActivity() {
             newAorView.setText("")
             newAorView.hint = getString(R.string.user_domain)
             newAorView.clearFocus()
-            ua.add()
             generateAccounts()
             alAdapter.notifyDataSetChanged()
             saveAccounts()

app/src/main/kotlin/com/tutpro/baresip/BaresipService.kt

@@ -541,7 +541,7 @@ class BaresipService: Service() {
                 R.drawable.dot_white
             else
                 R.drawable.dot_yellow
-            uas.add(UserAgent(uap))
+            uas.add(ua)
             return
         }