fixing array-extraction from sortedPoly. If an already sortedPoly is used, we don't need to check the array annyhow.

fixing extractSidePolys as it needs to split the sides dependent on weather the number of points is even or not

simplifications. this commit is ignoring failing tests. the sortedPoly-algorithm has to be fixed for generic cases

This reverts commit 202d5900.

This reverts commit 0e1426c1.

fix consistent use of angles in extract_geo_paras. using y-axis as reference for camber_angle as it is intended by the according test-function

fix beta_notation (old ntr notation). should we switch? in any case, make this documented via the profile-plot!