Add Examples

Add Examples/ADVDIFF example for advection-diffusion

Add exotic grid generators to Examples/GridTools

Add Examples/TestSuits for tests of diffusion and advection-diffusion
problems
4 jobs for master in 10 minutes and 15 seconds (queued for 3 minutes and 50 seconds)
Status Name Job ID Coverage
  Build
passed build_debug #478

00:02:27

passed build_opt #479

00:06:24

 
  Test
passed test_debug #480

00:01:07

passed test_opt #481

00:00:17