Remove some of the jaggies from the logo.

Thanks @adrianbanks for fixing this.
Merge pull request #67 from alastairs/better-software-east-logo

Better Software East logo
re-order the sponsors
add a new speakers page to show the details of a speaker
Merge pull request #68 from adrianbanks/issues/23

Fix #23: Sort sponsor logos by sponsor level
style the current speaker the same as the current user's sessions
swap some complex code for something simpler
render sessions and speakers more consistently
add icons to the fields in the profile edit page
make the other forms consistent with each other
change the email icon to a darker one to match the other icons in the footer
add some padding to make the title line up better with the logo
replace the actions class with pull-right
make the buttons either btn-primary or btn-danger
Merge pull request #70 from adrianbanks/icons-in-forms

Make all of the forms a bit easier to use and more consistent
Merge pull request #71 from adrianbanks/title-padding

Add some padding to the site title
Merge pull request #69 from adrianbanks/speaker-details-page

Add a speaker details page and link to it from the sessions
remove some of the extra icons as they clutter up the page
remove the add-ons from the change password page
remove the add-ons from the login page