translation fixes

- use wildcard for TRANSLATIONS in bitcoin-qt.pro to automatically build all translations present in src/qt/locale (thanks @tcatm)
- rename language files to the usual <lang>_<TERRITORY>
- include recently added language files for es_ES and nb_NO

bitcoin-qt.pro

@@ -175,10 +175,8 @@ FORMS += \
 CODECFORTR = UTF-8
 
 # for lrelease/lupdate
-TRANSLATIONS = src/qt/locale/bitcoin_de.ts \
-    src/qt/locale/bitcoin_es.ts \
-    src/qt/locale/bitcoin_nl.ts \
-    src/qt/locale/bitcoin_ru.ts
+# also add new translations to src/qt/bitcoin.qrc under translations/
+TRANSLATIONS = $$files(src/qt/locale/bitcoin_*.ts)
 
 isEmpty(QMAKE_LRELEASE) {
     win32:QMAKE_LRELEASE = $$[QT_INSTALL_BINS]\lrelease.exe

src/qt/bitcoin.qrc

@@ -46,8 +46,11 @@
         <file alias="update_spinner">res/movies/update_spinner.mng</file>
     </qresource>
     <qresource prefix="/translations">
-        <file alias="de_DE">locale/bitcoin_de.qm</file>
-        <file alias="nl_NL">locale/bitcoin_nl.qm</file>
-        <file alias="ru_RU">locale/bitcoin_ru.qm</file>
+        <file alias="de_DE">locale/bitcoin_de_DE.qm</file>
+        <file alias="es_CL">locale/bitcoin_es_CL.qm</file>
+        <file alias="es_ES">locale/bitcoin_es_ES.qm</file>
+        <file alias="nb_NO">locale/bitcoin_nb_NO.qm</file>
+        <file alias="nl_NL">locale/bitcoin_nl_NL.qm</file>
+        <file alias="ru_RU">locale/bitcoin_ru_RU.qm</file>
     </qresource>
 </RCC>