Update meetup/views.py

Несколько изменений, уменьшающих кол-во запросов к бд для:
* IndexPage
* EventsList
* TalkPage
* SpeakerPage

EventPage трогать не стал, так как его реализация удивила - url формируется и объект достается на основе поля number, которое blank=True и null=True.
Merge pull request #66 from FZambia/patch-1

Reducing number of queries in views
Alexandr Emelin
Integration tests for views
#64
fixes #60
Merge remote-tracking branch 'origin/master'
#64 Django discover runner instead of nose
#64 Nose removed from INSTALLED_APPS
#64 Switched to py3-compatible packages where possible

Not py3 yet:
* django-model-utils
* django-admin-sso
* s3 stuff
#64 All dependencies now py3 (at least what's left)

* django-admin-sso removed temporarilty
* django-model-utils ported (well, slightly buggy with 1.5 yet)
#64 django-nose is back in action (py3-compatible)
#64 py3 docutils
#64 Multiple py3 fixes in moscowdjango code
#64 py3.3 in travis.yml
Ornament
 Vacancies page
One vacancy page
#34 Early version of vacancies
#64 python 3.3.0  on heroku
#64 heroku doesn't support mercurial and python 3
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