Rename to Zec Wallet (#117)

* Update linux name

* Rename strings

* Rename debian/linux packages

* Rename windows build/installer

* Mac rename

* Update icon

* Update windows icon

* update background

* Prevent deleting utxos and balances while updating

src/mobileappconnector.ui

@@ -81,7 +81,7 @@
       <item row="3" column="0">
        <widget class="QCheckBox" name="chkInternetConn">
         <property name="text">
-         <string>Allow connections over the internet via zec-qt-wallet wormhole</string>
+         <string>Allow connections over the internet via ZecWallet wormhole</string>
         </property>
        </widget>
       </item>