hollow rectangle profiles
changed classids of rrw profiles
drawing for rectangular profiles
Merge branch 'master' into profiles
profiles rectangles, added dimension drawing and more cross sections
added generic hollow rectangle profile
changed file and folder names from rectangle to hollow rectangle
added profiles-inptest for INP-beams using sketches
Merge remote-tracking branch 'berndhahnebach/rrw' into profiles
Merge branch 'master' into profiles
I beams can be optionally added as Arch structures
hollow rectangle profiles optionally as Arch Structs
C beams optionally as Arch structs
cosmetics
renamed inp files and removed unneeded stuff
hollow data, all sections of EN 10210-2 added
moved inp profiles to python base function

This required some calculations to get additional dimensions. These were
done with misc/constraints_inp.py and the results stored in
data/profiles-inp.blt.
removed unneeded fcstd file
added drawings for inp profiles
merged classes split by size