Made new test environment specifically for JavaScript-related tests.
Update production_structure.sql after running these migrations:

add_triggers_to_check_variable_ranges
posteriors_tables_cleanup
add_fields_to_variables
add_db_files_to_model
image path
.
clear field
delete form
dismiss dialog on click
add contact button
change height
Merge branch 'master' of https://github.com/PecanProject/bety into feedback
Merge branch 'feedback' of https://github.com/phenolphtalein/bety into feedback