Resolve "Cleanup legacy code"

Closes #302

See merge request OPAL/src!84

Resolve "Cleanup unused and outdated files"

Closes #289

See merge request OPAL/src!81

Merge branch '299-implement-a-better-format-for-the-material-parameters-in-collimatorphysics' into 'master'

Resolve "Implement a better format for the material parameters in CollimatorPhysics"

Closes #299

See merge request OPAL/src!77

use approximation of mean excitation energy as default in Material class and use found values from Particle Data Group and NIST in derived classes. Renamed Titan to Titanium

Resolve "reading H5Block formatted field-maps crashes"

Closes #300

See merge request OPAL/src!78

Resolve "Reference particle has to be slowed down by material"

Closes #298

See merge request OPAL/src!76

fix reference for case when all particles are in degrader material; refactor CollimatorPhysics and tried to clean up mix of units and convertions

Merge branch '295-ParallelTTracker-crashes-when-using-particle-matter-integration-and-space-charge-solver-if-all-particles-are-in-material' into 'master'

Resolve "ParallelTTracker crashes when using particle matter integration and space charge solver if all particles are in material"

Closes #295

See merge request OPAL/src!70

Added comments for the material parameters and fit coefficients.
Additionally removed unused variable.

than zero particles are outside the material. When a single particle was
outside the material OPAL aborted with the message 'h<0, can not build a
mesh'. The bounding box around a single particle has no volume and hence
the volume of the mesh would be zero as well. This is fixed if more than
one particle is outside the material. For consistency with the method
computeSpaceChargeFields I chose minBinEmitted_m as number of particles
that have to be outside. Its default value is 10.

Avoid duplication of member variables for location and momentum of the...

See merge request OPAL/src!75

Resolve "Stripper Element not losing any particles"

Closes #293

See merge request OPAL/src!68

iostream instances aren't movable in older gcc.

See merge request OPAL/src!73

Avoid duplication of member variables for location and momentum of the reference particle and the transformation from the reference to lab coordinate system. Deleted the member variables in the ParallelTTracker and just using the ones in the PartBunch. This is a first step towards #287.

Merge branch '294-parallelcyclotrontracker-crashes-in-single-particle-mode-when-all-particles-are-lost' into 'master'

Resolve "ParallelCyclotronTracker crashes (in single particle?) mode when all particles are lost"

Closes #294

See merge request OPAL/src!69

Missed some getCoordTransformationTo. Fixing this

See merge request OPAL/src!74

iostream instances aren't movable in older gcc. Used unique_ptr instead which works also for older versions of gcc

Resolve "add missing  license"

Closes #296

See merge request OPAL/src!71

Resolve "Cleanup tests directory from non-unit tests"

Closes #290

See merge request OPAL/src!62

Use a more suitable name instead of getCoordTransformationTo

See merge request OPAL/src!67

fixes for warnings/errors with Xcode 10.2

See merge request OPAL/src!61