This reverts commit 01ef5980.

Merge branch '569-fittint-bend-angle-in-bend2d-may-run-indefinitely-in-some-circumstances' into 'master'

Resolve "fitting bend angle in Bend2D may run indefinitely in some circumstances"

Closes #569

See merge request OPAL/src!398

change sign such that the absolute value of the amplitude is lowered if the bending angle is too big and increased if it's too small

Resolve "Autophasing broken when fieldmap starts at z < 0"

Closes #568

See merge request !397

Resolve "Matched distribution not working with SCALABLE = FALSE"

Closes #566

See merge request OPAL/src!395

Resolve "Matched Distribution: Not matched?"

See merge request OPAL/src!393

RealDiracMatrix: remove unused functions, change storage type of ublas vector and fix bug in function 'transform'

Resolve "SAAMG: Wrong results with elliptic geometry"

Closes #542

See merge request !371

Resolve "Bend without DESIGNENERGY gives infinite loop"

Closes #546

See merge request !394

Resolve "Formula momentum conversion"

See merge request !385

Resolve "run.time of GreenWakeFunctionTest unit-test"

Closes #561

See merge request !392