Update Project-Id-Version to 2.3.2

Updated script to create Audacity.pot with Project-Id-Version
of audacity 2.3.2 and to update the Project-Id-Version in the po files too.

Ran script so as to apply it.

locale/zh_CN.po

@@ -10,9 +10,9 @@
 # mkpoli <snowwolf1001@gmail.com>, 2017-2018
 msgid ""
 msgstr ""
-"Project-Id-Version: Audacity\n"
+"Project-Id-Version: audacity 2.3.2\n"
 "Report-Msgid-Bugs-To: audacity-translation@lists.sourceforge.net\n"
-"POT-Creation-Date: 2019-04-18 18:13+0100\n"
+"POT-Creation-Date: 2019-04-24 19:44+0100\n"
 "PO-Revision-Date: 2019-04-19 21:31+0900\n"
 "Last-Translator: mkpoli <snowwolf1001@gmail.com>\n"
 "Language-Team: Chinese (http://www.transifex.com/klyok/audacity/language/"
@@ -3961,7 +3961,7 @@ msgstr "实际采样率： %d"
 #. i18n-hint:  A name given to a track, appearing as its menu button.
 #. The translation should be short or else it will not display well.
 #. At most, about 11 Latin characters.
-#. Dropout is a loss of a short sequence audio sample data from the
+#. Dropout is a loss of a short sequence of audio sample data from the
 #. recording
 #: src/Project.cpp
 msgid "Dropouts"
@@ -4920,7 +4920,7 @@ msgstr "立体声，999999 Hz"
 msgid "TrackView"
 msgstr "轨道视图"
 
-#. i18n-hint: The %d is replaced by th enumber of the track.
+#. i18n-hint: The %d is replaced by the number of the track.
 #. i18n-hint: compose a name identifying an unnamed track by number
 #: src/TrackPanelAx.cpp src/menus/ClipMenus.cpp
 #, c-format
@@ -12405,10 +12405,6 @@ msgstr "录音仪表栏(&R)"
 msgid "&Playback Meter Toolbar"
 msgstr "播放仪表栏(&P)"
 
-#. i18nhint: Clicking this menu item shows the toolbar
-#. which has sound level meters
-#. Command( wxT("ShowMeterTB"), XXO("Co&mbined Meter Toolbar"),
-#. FN(OnShowMeterToolBar), AlwaysEnabledFlag, checkOff ),
 #. i18n-hint: Clicking this menu item shows the toolbar
 #. with the mixer
 #: src/menus/ToolbarMenus.cpp