Port IPPL unit tests to OPAL unit tests and cleanup

For #291 (closed)

The following IPPL tests are moved (note that these are just moved almost 1 to 1, it was not tried to optimise them or reduce code duplication):

• adaTests/TestDot1.cpp adaTests/TestDot1.cpp -> tests/ippl_src/AppTypes/Vektor.cpp (test Vektor.Dot)
• Cartesian/TestCartesian-1.cpp -> ippl_src/Meshes/Cartesian.cpp (Meshes.Cartesian)
• simple/balance.cpp -> ippl_src/Field/Field.cpp (Field.Balance)
• simple/component.cpp -> ippl_src/Field/Field.cpp (Field.Component)
• simple/compressed.cpp -> ippl_src/Field/Field.cpp (Field.Compressed)
• simple/patches.cpp -> ippl_src/Field/Field.cpp (Field.Patches)
• simple/reduceloc.cpp -> ippl_src/Field/Field.cpp (Field.Reduceloc)
• simple/slices.cpp -> ippl_src/Field/Field.cpp (Field.Transpose)
• simple/soffset.cpp -> ippl_src/Index/Index.cpp (Index.SOffset)
• simple/TestAverageVC_CV.cpp -> ippl_src/Meshes/Average.cpp (Meshes.Average)
• simple/TestBC.cpp -> ippl_src/Field/BCond.cpp (Field.BC)
• simple/TestCartesianCentering.cpp -> ippl_src/Meshes/CartesianCentering.cpp (Meshes.CartesianCentering)
• simple/TestEureka.cpp -> ippl_src/Field/Eureka.cpp (Field.Eureka)
• simple/TestFieldDebug.cpp -> ippl_src/Field/FieldDebug.cpp (Field.FieldDebug)
• simple/TestScalarIndexing.cpp -> ippl_src/Field/Field.cpp (Field.ScalarIndexing)
• simple/TestTensorUnaryOps.cpp -> ippl_src/AppTypes/Tensor.cpp (Tensor.Tensor)
• simple/transpose.cpp -> ippl_src/Field/Field.cpp (Field.Transpose2)
• simple/tz.cpp -> ippl_src/AppTypes/VektorTz.cpp (Vector.Tz)

Furthermore, the following IPPL tests were found not functional anymore and are deleted without replacement:

• simple/bc_convert.cpp
• simple/iter_compress.cpp

Also the following files are deleted:

• simple/Readme
• Hal/yfld_q1_err.txt
• FFT/nodefile
• simple/FieldSlice.cpp (FieldView.cpp was removed in !224 (merged))
• simple/doof2d_a.cpp (FieldView.cpp was removed in !224 (merged))