Fix fret ruler extension parsing scales

extensions/fablabchemnitz/fret_ruler/scales/temp57ebs.scl

@@ -0,0 +1,62 @@
+! temp57ebs.scl
+!
+Cycle of 57 equal beating harmonic sevenths                                     
+ 57
+!
+ 21.06123
+ 41.99546
+ 63.08251
+ 84.04210
+ 105.15438
+ 126.13874
+ 147.27568
+ 168.28425
+ 189.44527
+ 210.47750
+ 231.66206
+ 252.71739
+ 273.64583
+ 294.72711
+ 315.68104
+ 336.78769
+ 357.76652
+ 378.89795
+ 399.90111
+ 421.05676
+ 442.08370
+ 463.26301
+ 484.31318
+ 505.23655
+ 526.31280
+ 547.26177
+ 568.36349
+ 589.33748
+ 610.46410
+ 631.46254
+ 652.61348
+ 673.63581
+ 694.81052
+ 715.85618
+ 736.77512
+ 757.84695
+ 778.79160
+ 799.88901
+ 820.85877
+ 841.98118
+ 862.97548
+ 884.12231
+ 905.14059
+ 926.31129
+ 947.35300
+ 968.26806
+ 989.33604
+ 1010.27689
+ 1031.37054
+ 1052.33660
+ 1073.45532
+ 1094.44601
+ 1115.58924
+ 1136.60399
+ 1157.77117
+ 1178.80943
+ 2/1