change strings to Bitcoin (uppercase), where it is used as a noun and update strings to use "Qt" (and not qt or QT) / update initialisation of notificator to use qApp->applicationName() instead of a static string

src/wallet.cpp

@@ -1251,7 +1251,7 @@ string CWallet::SendMoneyToBitcoinAddress(const CBitcoinAddress& address, int64
     if (nValue + nTransactionFee > GetBalance())
         return _("Insufficient funds");
 
-    // Parse bitcoin address
+    // Parse Bitcoin address
     CScript scriptPubKey;
     scriptPubKey.SetBitcoinAddress(address);