Query mode

Features:

• Query mode - allows to check a single value from the database

Minor Changes

Fixes:

• Memory mode: removed necessary database flag
• ReadWrite mode: added ops to read and write

New modes

Features:

• old series mode: lists all forgotten series

New modes

Features:

• ReadWrite mode - checks the bytes per second on read and write
• Memory mode - checks the RSS

Baserelease

Features:

• Ping mode - tests if InfluxDB is alive
• Disk mode - measures the disk usage
• Number of Services/Measurements
• Difference of Services/Measurements