Improved build log parsing

• enable compiler colorized diagnostics
• rewritten parsing of logs
  • properly detect issues from gcc, CMake, Python, etc.
  • prevent false errors (when the string error was by chance in a warning message)
• added links to source files in gitlab from warning/error messages
• removed reports for the old dashboard

Old reports for the new dashboard are still produced, until the dashboard is updated to understand the new products (see !161 (merged)).