USPS Methods

[michael_s]

I've updated a number of small things:
1. Removed "$this->_setMachinable('False');" from usps.php that had crept into the code causing Parcel Post quotes to exceed Priority Mail quotes despite the fix
2. Removed deprecated code and 1 sql insert that duplicated a sql key for old usps naming standards
3. Updated the instructions substantially and clarified some points
4. Removed drop in instructions because it just causes errors for nearly everybody - it is good for people to discover how to edit, copy, and paste code - the instructions are clear
5. Included a version with insurance and without insurance
6. Included update instructions
7. Added "Estimated:" on quotes seen in checkout shipping

That's it. This is an effort to unify and clean up this contribution and preserve changes in the 2 forks (with and without insurance)

Scott
olsonsp4c

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