backspace key bound to treemodel in layer dialog

to be added to layer widget and energies widget as well
backspace support added for layer widget and energies widget

reference layer is a mess -> needs to be fixed
Fixed longstanding bug involving reference layer

should be ok now
fortified save function
fixed openmp slowdown in brute force mode

removed mutex: progress printing only performed by the master thread
findpost_fast is now really fast

wasnt working at all before. now it is. and fast!
added hubbell's database of average L fluoresence yields

necessary for Ebel's algorithm for the L lines
xmi_tube_ebel updated according to Ebel's 2003 paper
Merge branch 'bugfixes' into self-enhancement
self enhancement work

will stop it for now... doesnt seem to work well nor is it really useful