add pull from Transifex to build process

.github/workflows/build.yml

@@ -19,6 +19,8 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         pip install -r requirements_prod.txt
+    - name: Get translations
+      run: make pulllang
     - name: Flush errors
       run: make allerr
     - name: Build docs

.gitignore

@@ -2,6 +2,8 @@ _build
 venv
 venv_prod
 .vscode
+/source/locale/*
+!/source/locale/README.md
 
 # Base ignores:
 # =============

source/locale/README.md

@@ -0,0 +1 @@
+files for translations (pulled from Transifex) not kept in the repo history