Update to Flask-Login latest version
Fix lazy_gettext on flash sections
Fix lazy_gettext and flash
Fix lazy_gettext and flash
Fix lazy_gettext and flash
Merge pull request #539 from PyBossa/issue-flask-login

Issue flask login
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