New non-Census occ codes

The non-Census occ codes were revised to fit a more logical grouping and order.

0.2.5

Fixes in codes in jobs.json. That work continues.
More distinctions between jobs that are not capitalized and names that are.
etc.

0.2.4

Many jobtitles are also more commonly not a job. This recodes many of these ambiguities to 9998
The example of Oscar best picture awards is updated accordingly.

Better disambiguation of upper v lower case titles

Several job titles have to be disambiguated based on whether they are capitalized of not:

• only a job title if capitalized: General, Justice, etc.
• only a job title is lower case: potter, carpenter, etc.
• not a job title if capitalized and plural: Queens
• different occupation depending on case: President=12 (of U.S), president=10 (of a company)

minor jobs.json fixes

esp. for student codes

Added new code for upper/lower case disambiguation.

Several jobtitles depend on whether they are capitalized or all lower case.
Some are titles only if lower case: e.g., potter.
Some are titles only if upper case: e.g., General.
Some titles have different occ codes depending on their case: e.g., President, president
All these ambiguous titles are now identified in jobs.json as negative numbers which triggers jobs.py to check for capitalization.

Initial release

beta version. Expect changes, especially to the list of jobtitles and their codes (jobs.json).
Suggestions welcome!