INTPYTHON-827 Prevent Value strings and model update values from being interpreted as expressions#445

timgraham merged 3 commits intomongodb:mainmongodb/django-mongodb-backend:mainfrom

WaVEV:INTPYTHON-827-Cannot-save-CharField-and-TextField-with-values-starting-with-$WaVEV/django-mongodb-backend:INTPYTHON-827-Cannot-save-CharField-and-TextField-with-values-starting-with-$Copy head branch name to clipboard