WIP Clinic Exporter

Exports all clinic data to various formats

TODO

- Implement `to_xlsx`, `to_json`, and `to_csv`
- Wrap exported data in some kind of presenter so it's less messy
- Wire up to the UI so clinic organizers can use it
Fix documentation errors and add supported data types

Eventually we will want to list the supported data types somewhere in
the UI. For now I've created a constant which lists every type the
exporter can work with. I also use it as the default when no data_types
are provided.

I also updated some out of date documentation :anguished:
Format for exported data

Playing with a YAML file to map column names to model attributes
Colorized output when no Qt installation is found.
Check for PostgreSQL installation.
Check for Ruby 1.9.3 installation.
Standardize the use of quotes in setup task file.
Rescue StandardError instead of Exception.

Rescuing from `Exception` is dangerous since it can lead to unexpected
paths. Even and explicit `exit` call would be rescued causing the
process not to finish. Rescuing from StandardError is the most generic
we can safely get.
Bundler is required for running the app.
Extract common output functions in setup script.
Do not add upstream remote if it already exists.

This avoids an annoying error message in case you run the `setup` script
more than once.
Improvements based on @rmascarenhas's suggestions
Add procedures format for Clinic Export

Support associated records in ClinicExport#data via the new column
method (See docs for details)
Prescription, PreMed, and Survey formats for ClinicExporter
Export clinic data button

Taking the axlsx_rails gem for a test drive. So far so good. Exports all
of the clinic data (via ClinicExporter) to an xlsx file
Fix Chart # in format file
Merge branch 'export-data'
5.0 :metal:

Thanks for everyone who helped make this happen. I expect over 5,000
people to directly benefit from this version of MOMMA :heart:
Merge remote-tracking branch 'upstream/master'