Remove translation template midori.pot from the repository

Transifex should generate a template. A benefit of this is that it
automatically notifies about problems.

The file midori.pot does unfortunately have to live in the source
tree, but we remove it in clean and distclean targets.

.gitignore

@@ -6,6 +6,7 @@ _build_
 
 po/.intltool-merge-cache
 po/POTFILES
+po/midori.pot
 po/stamp-it
 po/*.gmo
 

TRANSLATE

@@ -4,10 +4,13 @@ This file is licensed under the terms of the expat license, see the file EXPAT.
 
 If you want to translate Midori, here are a few helpful tips.
 
-To update the localization template:
+There is no template in the repository. To create a localization template:
 
 ./waf build --update-po
 
+You can use the same command in the future to update the template. It is
+recommended to do that always before you update localizations.
+
 If you want to add a new language 'aa', create it like this:
 
 cd po

wscript

@@ -494,6 +494,13 @@ def build (bld):
     if Options.commands['check']:
         bld.add_subdirs ('tests')
 
+    if Options.commands['clean']:
+        distclean ()
+
+def distclean ():
+    if os.path.exists ('po/midori.pot'):
+        os.remove ('po/midori.pot')
+
 def shutdown ():
     if Options.commands['install'] or Options.commands['uninstall']:
         dir = Build.bld.get_install_path ('${MDATADIR}/icons/hicolor')