Deprecate data_extract_spec

[gogonzo]

After release we need to deprecate data_extract_spec and replace it with teal_transform_module. This is extensive change.

• In teal.modules.* make select_spec or choices selected as a default argument (need a research which way to go).
• Then replace data_extract_module with ui elements specified directly.
• We need a simpler merge_module to consume information from inputs
• Make a function in teal which reads server_args and fetches and removes all filter_spec (from data_extract_spec). This should throw deprecation message and suggesting specifying teal_transfrom_module. This function except throwing errors should make a module based on the specifying filter_spec (this will be an automatic way of transforming filter_spec into teal_transform_module)
• ...