helpers/datetime: Use user locale for date/time formatting
lib: Added formatter package
lib/helpers: Moved format_flight_title into new formatter.flight module
formatter/datetime: Moved get_locale() to lib.i18n module
lib/formatter: Added localized numbers formatter functions
lib: Moved units module into formatter package
formatter/flight: Merged import statements
formatter/units: Use localized numbers formatter functions
i18n: Updated French translation
i18n: Updated Russian translation
lib.helpers.country: Simplified language_to_country_code() function
lib.helpers.country: Removed unnecessary __future__ import
lib.helpers.markdown/urlize: Moved modules into lib.markdown package
lib: Added xcsoar package and moved analysis module into it
lib.xcsoar.analysis: Moved helper_path() to separate module
lib.xcsoar.analysis: Moved flight_path() function into separate module
Moved form package into lib package (form -> lib.form)
lib.form: Renamed form module to bootstrap
Moved files package into lib package (files -> lib.files)
lib.files: Fixed whitespace and unused variable warnings