Update HACKING.rst

Removing Ruby-only tool.
Setup Vagrant for easy non-Ubuntu dev env.
Merge pull request #416 from kadams54/vagrant

Setup Vagrant for easy non-Ubuntu dev env.
Merge pull request #417 from craigmaloney/patch-3

Update HACKING.rst
Delete non activated accounts

Delete records from activations and users table

Last login should be None

Better query

Test added for non activated account

More tests added
Add bookmark and user stats apis.

- Update the dashboard to use it via new JS API and Views
- Fix nasty prototype bug that caused issues with multiple api calls on a
page.
Improving Tags with Test Updated

- Fixes #405
Split dev deps into own requrements, remove from download-cache
Add support for test coverage reporting
Update for pyramid 1.5
Fix the username check