Move redis access and JobScraper configuration to middleware.
Update middleware to set up Redis and get scraper search config.
Use separate hash of opts for Redis init.
Create Redis instance using opts.
Correct option name for config file passed to middleware.
Pass config file option correctly from config.ru.
Save the search config data in rack env.
Remove unneeded context object.
Remove use of search instance variable in index template.
Use consistent style for logger (with brackets).
Get search instance var content from Rack env.