separate push and pull locale

contrib/pull_locale

@@ -0,0 +1,65 @@
+#!/usr/bin/env python3
+import os
+import subprocess
+import io
+import zipfile
+import sys
+
+try:
+    import requests
+except ImportError as e:
+    sys.exit(f"Error: {str(e)}. Try 'sudo python3 -m pip install <module-name>'")
+
+os.chdir(os.path.dirname(os.path.realpath(__file__)))
+os.chdir('..')
+
+cmd = "find electrum -type f -name '*.py' -o -name '*.kv'"
+
+files = subprocess.check_output(cmd, shell=True)
+
+with open("app.fil", "wb") as f:
+    f.write(files)
+
+print("Found {} files to translate".format(len(files.splitlines())))
+
+# Generate fresh translation template
+if not os.path.exists('electrum/locale'):
+    os.mkdir('electrum/locale')
+cmd = 'xgettext -s --from-code UTF-8 --language Python --no-wrap -f app.fil --output=electrum/locale/messages.pot'
+print('Generate template')
+os.system(cmd)
+
+os.chdir('electrum')
+
+crowdin_identifier = 'electrum'
+crowdin_file_name = 'files[electrum-client/messages.pot]'
+locale_file_name = 'locale/messages.pot'
+
+# Download & unzip
+print('Download translations')
+s = requests.request('GET', 'https://crowdin.com/backend/download/project/' + crowdin_identifier + '.zip').content
+zfobj = zipfile.ZipFile(io.BytesIO(s))
+
+print('Unzip translations')
+for name in zfobj.namelist():
+    if not name.startswith('electrum-client/locale'):
+        continue
+    if name.endswith('/'):
+        if not os.path.exists(name[16:]):
+            os.mkdir(name[16:])
+    else:
+        with open(name[16:], 'wb') as output:
+            output.write(zfobj.read(name))
+
+# Convert .po to .mo
+print('Installing')
+for lang in os.listdir('locale'):
+    if lang.startswith('messages'):
+        continue
+    # Check LC_MESSAGES folder
+    mo_dir = 'locale/%s/LC_MESSAGES' % lang
+    if not os.path.exists(mo_dir):
+        os.mkdir(mo_dir)
+    cmd = 'msgfmt --output-file="%s/electrum.mo" "locale/%s/electrum.po"' % (mo_dir,lang)
+    print('Installing', lang)
+    os.system(cmd)