Merge pull request #3 from t1gor/master

Adding template changes
Merge pull request #4 from t1gor/master

More html
retab, add google analytics and add closing tag
add internal comments box
add internal_comments to the admin participants list page
missed comma
use special filter
change list_display order for the participants admin list page
update list_display order
More template modifications

Conflicts:
	templates/base.html
Prettify sponsors

Make logo's look better
oops

Images path
Describe in more words
retab, add google analytics and add closing tag

Conflicts:
	templates/base.html

Conflicts:
	templates/base.html
add messages and improvements to registration form
fix google analytics tag in base.html
remove sevstar from partners
add i18n basic support (russian language by default)
add sentry to the project to track errors
fix errors message placement on the registration form