Fix fret ruler extension parsing scales

extensions/fablabchemnitz/fret_ruler/scales/cet54a.scl

@@ -0,0 +1,106 @@
+! cet54a.scl
+!
+101st root of 24
+ 101
+!
+ 54.47480
+ 108.94960
+ 163.42441
+ 217.89921
+ 272.37401
+ 326.84881
+ 381.32361
+ 435.79842
+ 490.27322
+ 544.74802
+ 599.22282
+ 653.69762
+ 708.17243
+ 762.64723
+ 817.12203
+ 871.59683
+ 926.07163
+ 980.54644
+ 1035.02124
+ 1089.49604
+ 1143.97084
+ 1198.44564
+ 1252.92045
+ 1307.39525
+ 1361.87005
+ 1416.34485
+ 1470.81965
+ 1525.29446
+ 1579.76926
+ 1634.24406
+ 1688.71886
+ 1743.19366
+ 1797.66847
+ 1852.14327
+ 1906.61807
+ 1961.09287
+ 2015.56767
+ 2070.04248
+ 2124.51728
+ 2178.99208
+ 2233.46688
+ 2287.94168
+ 2342.41649
+ 2396.89129
+ 2451.36609
+ 2505.84089
+ 2560.31569
+ 2614.79050
+ 2669.26530
+ 2723.74010
+ 2778.21490
+ 2832.68970
+ 2887.16451
+ 2941.63931
+ 2996.11411
+ 3050.58891
+ 3105.06371
+ 3159.53852
+ 3214.01332
+ 3268.48812
+ 3322.96292
+ 3377.43772
+ 3431.91253
+ 3486.38733
+ 3540.86213
+ 3595.33693
+ 3649.81173
+ 3704.28654
+ 3758.76134
+ 3813.23614
+ 3867.71094
+ 3922.18574
+ 3976.66055
+ 4031.13535
+ 4085.61015
+ 4140.08495
+ 4194.55975
+ 4249.03456
+ 4303.50936
+ 4357.98416
+ 4412.45896
+ 4466.93376
+ 4521.40857
+ 4575.88337
+ 4630.35817
+ 4684.83297
+ 4739.30777
+ 4793.78258
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+ 4902.73218
+ 4957.20698
+ 5011.68178
+ 5066.15658
+ 5120.63139
+ 5175.10619
+ 5229.58099
+ 5284.05579
+ 5338.53059
+ 5393.00540
+ 5447.48020
+ 24/1