Fix fret ruler extension parsing scales

extensions/fablabchemnitz/fret_ruler/scales/temp59ebt.scl

@@ -0,0 +1,64 @@
+! temp59ebt.scl
+!
+Cycle of 59 equal beating thirds                                                
+ 59
+!
+ 20.34168
+ 40.64185
+ 60.98841
+ 81.29338
+ 101.64470
+ 121.95437
+ 142.31034
+ 162.62459
+ 182.98510
+ 203.30384
+ 223.66879
+ 243.99190
+ 264.36119
+ 284.68858
+ 305.06210
+ 325.39367
+ 345.77133
+ 366.10698
+ 386.48869
+ 406.82833
+ 427.12648
+ 447.47104
+ 467.77405
+ 488.12341
+ 508.43116
+ 528.78522
+ 549.09759
+ 569.45624
+ 589.77314
+ 610.13627
+ 630.45759
+ 650.82510
+ 671.15074
+ 691.52252
+ 711.85238
+ 732.22834
+ 752.56232
+ 772.94237
+ 793.28038
+ 813.57692
+ 833.91988
+ 854.22131
+ 874.56911
+ 894.87532
+ 915.22786
+ 935.53873
+ 955.89588
+ 976.21132
+ 996.57299
+ 1016.89287
+ 1037.25896
+ 1057.58320
+ 1077.95359
+ 1098.28208
+ 1118.65669
+ 1138.98933
+ 1159.36805
+ 1179.70475
+ 2/1