i18n: run lupdate and lrelease, update zh_CN translation

file names are now aligned to the language descripted in
the ds file, there are two ts file descripted as pt_BR so
I leave one _br.ts untouched.

translations/caesium_el_GR.ts

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!DOCTYPE TS>
-<TS version="2.0" language="el_GR">
+<TS version="2.1" language="el_GR">
 <context>
     <name>AboutDialog</name>
     <message>
@@ -356,7 +356,7 @@ Saved space: </source>
     </message>
     <message>
         <source>Choose and output folder...</source>
-        <translation>Επιλέξτε φάκελο εξαγωγής...</translation>
+        <translation type="vanished">Επιλέξτε φάκελο εξαγωγής...</translation>
     </message>
     <message>
         <source>Preview</source>
@@ -840,5 +840,9 @@ changes take effect</source>
         <source>Your version is </source>
         <translation>Η έκδοσή σας είναι η </translation>
     </message>
+    <message>
+        <source>Server connection closed. Please download the new version manually.</source>
+        <translation type="unfinished"></translation>
+    </message>
 </context>
 </TS>

translations/caesium_ja_JP.ts

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!DOCTYPE TS>
-<TS version="2.0" language="ja_JP">
+<TS version="2.1" language="ja_JP">
 <context>
     <name>AboutDialog</name>
     <message>
@@ -326,7 +326,7 @@ Saved space: </source>
     </message>
     <message>
         <source>Choose and output folder...</source>
-        <translation>出力先を選択...</translation>
+        <translation type="vanished">出力先を選択...</translation>
     </message>
     <message>
         <source>Preview</source>
@@ -810,5 +810,9 @@ changes take effect</source>
         <source>Your version is </source>
         <translation>現在のバージョン </translation>
     </message>
+    <message>
+        <source>Server connection closed. Please download the new version manually.</source>
+        <translation type="unfinished"></translation>
+    </message>
 </context>
 </TS>

translations/caesium_pt_BR.ts

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!DOCTYPE TS>
-<TS version="2.0" language="pt_BR">
+<TS version="2.1" language="pt_BR">
 <context>
     <name>AboutDialog</name>
     <message>
@@ -556,10 +556,6 @@ Você quer criá-la?</translation>
         <source>Apply</source>
         <translation type="unfinished"></translation>
     </message>
-    <message>
-        <source>Choose and output folder...</source>
-        <translation type="unfinished"></translation>
-    </message>
     <message>
         <source>Keep Structure</source>
         <translation type="unfinished"></translation>
@@ -857,5 +853,9 @@ as mudanças tenham efeito</translation>
         <source>Your version is </source>
         <translation>Sua versão é </translation>
     </message>
+    <message>
+        <source>Server connection closed. Please download the new version manually.</source>
+        <translation type="unfinished"></translation>
+    </message>
 </context>
 </TS>