Settings exports pre-multilingual settings can't be restored to versions with multilingual support

[srstsavage]

Settings JSON exports from versions without multilingual support can't be restored to versions with multilingual support. The settings file must be manually edited, converting serviceIdentification.abstract and serviceIdentification.title into multilingual objects:

    ...
    "serviceIdentification.abstract": "Some SOS installation",
    ...
    "serviceIdentification.title": "My SOS",
   ...

to

    ...
    "serviceIdentification.abstract": {
        "eng": "Some SOS installation"
    },
    ...
    "serviceIdentification.title": {
       "eng": "My SOS"
    },
   ...

If multilingual setting parsing fails, the settings loader should try a normal string setting parse and convert it to a multilingual setting if successful.

[srstsavage]

If anyone using *nix needs to quickly update old settings JSON exports as noted above:

cp settings.json settings.json.bak
sed -i 's/\("serviceIdentification\.\(title\|abstract\)": \)\(".*"\)/\1{ "eng": \3 }/' settings.json