Update master

Created by: acrovato

Context and description

This PR consists in bringing the latest development into master. They consist of the following:

• class enum ELTYPE member names have been modified from EL_NAME to NAME
• override keyword have been added for flow module
• flow module and part of tbox module have been documented
• Various refactoring for the following classes:
  • Pt
  • Link
  • MshDeformation
  • flow::Wake
  • flow::Kutta
• CMakeLists have been updated so that each module finds its own required packages. This is a first implementation but it can be further improved
• nogui options has been added to some fdtd module testcase to supress plot output when using ctest. This is a temporary solution
• Add sph test
• Minor changes and cleaning

Warning

Kim features (mrstlnos) have not been built and are more than likely completely broken...

Checklist

• compilation (ubuntu)
• compilation (windows)
• compilation (macOS)
• battery testing (ubuntu)
• battery testing (windows)
• battery testing (macOS)
• formatting

tbox/src/wLinesearch.cpp

@@ -62,6 +62,7 @@ double Linesearch::backtrack()
             break;
         lsIt++;
     } while (lsIt < maxLsIt);
+    return a;
 }