Use SQLAlchemy recipe to drop all tables

The SQLAlchemy team recommends this receipt for dropping everything in the DB.

See this link for further details: http://www.sqlalchemy.org/trac/wiki/UsageRecipes/DropEverything
Unit Tests for API Category GET
Unit Tests for Category API POST, PUT & DELETE
PEP8 Fixes
Fix a typo in the variable name
API Category
Unit Tests for Category HATEOAS support
Add hateoas to categories
Use SQLAlchemy recipe to drop all tables

The SQLAlchemy team recommends this receipt for dropping everything in the DB.

See this link for further details: http://www.sqlalchemy.org/trac/wiki/UsageRecipes/DropEverything
Unit Tests for API Category GET
Unit Tests for Category API POST, PUT & DELETE
PEP8 Fixes
Fix a typo in the variable name
API Category
Unit Tests for Category HATEOAS support
Add hateoas to categories
Merge branch 'issue-533-category' of github.com:PyBossa/pybossa into issue-533-category
Add Category to docs
Merge pull request #538 from PyBossa/issue-533-category

Issue 533 category