feat: implement the BlockChainAdapter

currently supports fetching balance for address
also update requirements.txt
style(admin): PEP8 the module (mostly whitespace)
Add ignore to local db file
chore(readme): add deployment and other details
tests: Reorganize test structure a bit
fix: bad url name in registraiton_complete template
feat: WIP FeaturedBounty
tests: add a proper test_valid_registration

also correct skipping captcha test in tests
feat: more WIP featured bounty
fix: properly check if shared
fix: return object to view (for get_success_url)
fix: save bounty before attempting to clear/get tags
fix: return bounty to make get_absolute_url work
fix: no need to save SharedBounty again after adding votes (m2m)
chore: Make project more prod. ready by correcting some setting

namely: static files, logging, debug and allowed hosts
tests: Add more objects to fixtures
Update git ignore to ignore collected static files dir
WIP: finish implementing featured bounty creation

This also depends on completion of story #66694712

[Finished #66554500]
fix: missing argument in logger
fix: support py 2.6 by quoting float for decimal field fixture
fix: drop py 2.6 support (travis fails) - it's not worth it
feat: implement featured bounty display

also:
refactor admin module and add an address ModelAdmin
add settings template context processor
disable devserver real time sql logging
fix logging a bit
refactor templates

[Finished #66694712] [Finished #66554870]
Merge branch 'featured_bounty'

[Delivers #66554500]
[Delivers #66694712]
[Delivers #66554870]