Configuring PYTHON_LEGACY UUID representation in cfc_webapp.py

[swastis10]

We cannot encode native uuid.UUID with UuidRepresentation.UNSPECIFIED therefore defining uuid_representation as PYTHON_LEGACY fixes the issue
Contains fix for - e-mission/e-mission-docs#856 (comment)

[swastis10]

The test data is now being loaded fine by the local server on the UI.

[shankari]

@swastis10 I don't think we should edit bottle.py directly since it is a dependency and not our code
I would use the approach outlined in bottlepy/bottle#287

Note that I already do this in cfc_webapp.py, similar to the suggestions in the issue above

    for plugin in app.plugins:
        if isinstance(plugin, JSONPlugin):
            print("Replaced json_dumps in plugin with the one from bson")
            plugin.json_dumps = bson.json_util.dumps

You just need to change it to plugin.json_dumps = lambda s: bju.dumps(...)

[swastis10]

The data is still loading fine, just like the screenshot attached above.

[shankari]

LGTM! Will merge and deploy after the tests finish running