templates/base-page: Added optional title_right block
templates/flights: Added "IGC" download button to the title section

.. and removed download link from the details table
README: Updated TravisCI link and image URL
README: Updated Github URLs
README: Updated "Contributing" content
Merge pull request #12 from Turbo87/readme-update

README updates
Merge pull request #13 from Turbo87/igc-button

Added IGC download button
details-table: Moved "Share" button to the title section
assets: Use bootstrap 2.2.0 scripts
Merge pull request #15 from Turbo87/share-button

Improved share button
controllers/upload: Fixed multiple file uploading
templates/change_club: Fixed club change form
controllers: Removed deprecated URL patterns
lib/form: Moved package to skylines.forms
controllers/users: Moved field classes to form.units module
forms/units: Renamed field classes
controllers/users: Moved field classes to form.club module
controllers/clubs: Moved field classes to form.club module
controllers/clubs: Moved field classes to form.pilot module
controllers/users: Extracted password_match_validator