Changed some strings to BSPLine widgets

Improvements to BSPline widgets: Now the "Change Weight" is % based insteas 0-1 interval Removed "Ignore cusp nodes" and substituted by: "Apply on cusp nodes" and "Apply on non cusp nodes"

Refactor BSPline and Spiro to remove duplicated functions

Fix coding style issues in bspline/spirolive code

Cleanup headers in BSpline LPE

Removed auto size helper paths because strange result

fix a bug in bspline on apply on non shapes

Refactor to remove references to Desktop/Ui in Effect, bspline and fillet-chamfer. Also fixed the selected node problem in units not px. Also fixed two var to not allow NULL pointed by Johan Engelen.

Update wrong variable name and apply the same way to select nodes to fillet/chamfer and BSpline, still the boring bug -ignore apply only to selected nodes- when document not in 'px'

Update to bspline branch, now helper path fixed and optional

Add helper paths to BSPline

Add signals to ToggleButton; more coding style

Redesign of the BSpline LPE widgets

clang-format bspline lpe files

Update color lines overlay, with halo of 1 px matched by Gez. Fix some crash snapping. Added new button widget to make cusp node

Fixed bug moving selected nodes

Changing width only to selected nodes

Fixed end extremium node delete fault, ready for testing

For testing, widget added, regression fixed

Working width widgets

working whith widgets

Working with widjets

Updating original path

~sub fix, double click to reset default handles and control to 10% step

First Steps, BSpline Live Path Ok, working Pen Context

Removed unused function

First attempt for Adjustable Wheight

Going to merge