Various changes

- Made search support ^ and $ for begin and end
- Made CSS layout prettier
- Created job to reevaluates combinations matching a specific discoverer
- Changed value column limit to 1000
- Created standard import job
Various changes :

- Added cache for devices page
- Added android massive device import
Added discoverers cache to speedup discovery
Ameliorate caching

- Add temp table to discover on 1 combination
- Optimize select query for finding discoverers