Integrate c3p0 database library
Added comments to scripts in tools/
Added SQL to insert test device data.
Added capability to set log level.
Updated existing configuration files to specify logger.level when logger.enable=true.  Changed log level to INFO from ALL.
Merge pull request #911 from jon-stumpf/enhancement-update-tools

Update scripts in tools
Merge pull request #913 from jon-stumpf/enhancement-log-level

Add logger.level capability
Refactored NamedParameterStatement to manage connections and prepared statements all by itself
Merge pull request #875 from vitalidze/master

Database code refactoring
Created SQL scripts to create the traccar database.
Added the configuration files used for testing.
Increased the size of the extended info column to address test cases.
First pass at segregating traccar and traccar-web DB needs