model/flight_comment: Load author information once comments are loaded

This solves an 1+n query situation when viewing a flight that has multiple
comments.
Merge pull request #120 from Turbo87/i18n

Updated translations
views/upload: Fixed unicode filenames in ZIP files
Merge pull request #122 from Turbo87/unicode-zip-file-fix

views/upload: Fixed unicode filenames in ZIP files
Merge pull request #121 from Turbo87/lazy-authors

model/flight_comment: Load author information once comments are loaded
views/flights: Fixed JSON loading of flights table
Merge pull request #123 from Turbo87/flight-json-fix

views/flights: Fixed JSON loading of flights table
assets/bundles: Use rawgithub.com instead of raw.github.com

Fixes strict mimetype handling in debug mode
views/flight: Import cleanup
Merge pull request #125 from Turbo87/import-cleanup

views/flight: Import cleanup
Merge pull request #124 from Turbo87/mimetype

assets/bundles: Use rawgithub.com instead of raw.github.com
assets: Fixed Twitter Bootstrap URLs
events: Fixed link for "Pilot X started following you" events
Merge pull request #126 from Turbo87/follower-event-fix

events: Fixed link for "Pilot X started following you" events
Fixes initialise_database file mention to match the actual filename
Merge pull request #127 from bbonamin/master

Fixes initialise_database file mention to match the actual filename
views/tracking: Removed debug prints
import_welt2000: Fixed missing application context

Fixed issue #128
Fixes INSTALL.md file commands to match actual file locations
Merge pull request #129 from Turbo87/app-context

import_welt2000: Fixed missing application context