filter project options to unarchived projects by default
add migration to set archived default to false, not nil
add root back to unarchived projects select
remove root from project_options
update projects factory with default archived value
remove snapshots into
include root project in project_options at all times
remove snapshots. Fixes #120
remove remnant integration test
Merge pull request #122 from TimePulse/dropdown_shows_only_unarchived_projects_120

Dropdown shows only unarchived projects 120