Custom log formatting

[Thanduriel]

Improved log formatting

Fixes #1039

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Change Description

Logged messages now also display current local time and the severity level. This is implemented using standard boost::log customization points in Logged::configure. Thus, improved formatting is not used in some tests (like the one referenced in the issue) where Model::configure is not called.

Test Description

I run some cases with a verbose log level, e.g.:

[Logged]
minimum_log_level = all
console_log_level = all

[timspainNERSC]

Good that the logging is finally getting looked at!
The CMake formatter has made a mess of the layout of one comment. The rest looks fine, though.