[convertpottojson] Handle lines ending with "

the .pot file has lines starting and ending in quotes
we used strip(\") to get rid of them.

If a string ends in ", it will appear as "" in the file, and both
characters get stripped.

Instead chop the first and last characters

util/convertpottojson.py

@@ -21,6 +21,13 @@
 currentId = ""
 currentMsg = ""
 
+def cleanupMessage(msg):
+    # strip wrapping "'s
+    msg = msg[1:-1]
+    # unescape quotes in the pot file
+    msg = msg.replace('\\\"', '\"')
+    return msg
+
 with open(potFileName, 'r') as infile:
     for line in infile.readlines():
         line = line.strip()
@@ -40,13 +47,9 @@
             parts = line.split(' ', 1)
             if len(parts) != 2:
                 continue
-            msg = parts[1].strip('\"')
-            msg = msg.replace('\\\"', '\"')
-            currentMsg = msg
+            currentMsg = cleanupMessage(parts[1])
         else:
-            msg = line.strip('\"')
-            msg = msg.replace('\\\"', '\"')
-            currentMsg += msg
+            currentMsg += cleanupMessage(line)
 
 
 outTranslations = {}