tests: modify scripts to allow a target argument to compile a single test coffee script and run a single test javascript file
Trace_Domain:
  - Allow to specify "bellow or equal" expression to specify a trace level in queries
  - Update documentation
    - Document the above expression
    - Reference Trace_Domain.default_trace_level
    - Fix some imprecisions
    - Add Wikipedia reference for Trace Level section and reference to wikipedia licence
  - Modify tests to use "bellow or equal" expression to specify some trace levels