Add smwgDefaultLoggerRole

[mwjames]

This PR is made in reference to: #

This PR addresses or contains:

• Adds the smwgDefaultLoggerRole admin setting to filter the amount (in terms of granularity) of information being logged when either $wgDebugLogFile or $wgDebugLogGroups is enabled
• The default role is set to $GLOBALS['smwgDefaultLoggerRole'] = 'production' which means that only a very limited log output is generated, to show all SMW related loggable events the developer role is required, the user role will include extra events such executions of jobs
• Use LoggerAwareTrait more consistently instead of implements LoggerAwareInterface

This PR includes:

• Tests (unit/integration)
• CI build passed

Fixes #

[mwjames]

@kghbln By default this should minimize the log spam produced by SMW with the [smw] identifier. The next time we require some in-depth analysis, you most likely need to change the role setting to developer.