add a lot of current stuff

this is not (yet) in the frm2 repo

Change-Id: Ia5b2996803c3dbb15b85ab1bc3a24717ac6297fb

secop_psi/calcurves/cs405.inp

@@ -0,0 +1,51 @@
+sens=cs405
+unit=Ohm
+type=C
+form=loglog
+curv
+8342.788494	0.29
+7997.108246	0.3
+7385.224382	0.32
+6860.63041	0.34
+6406.112969	0.36
+5658.608243	0.4
+5070.752206	0.44
+4597.749769	0.48
+4210.063652	0.52
+3887.352305	0.56
+3615.181303	0.6
+3330.280576	0.65
+3093.128214	0.7
+2893.109164	0.75
+2722.418161	0.8
+2575.268002	0.85
+2447.269899	0.9
+2335.06011	0.95
+2236.020956	1
+2148.092966	1.05
+2069.625085	1.1
+1999.285056	1.15
+1935.977983	1.2
+1878.783871	1.25
+1826.93583	1.3
+1779.78886	1.35
+1736.797991	1.4
+1697.485938	1.45
+1661.422111	1.5
+1518.391902	1.75
+1417.276946	2
+1341.147035	2.25
+1280.347927	2.5
+1230.110043	2.75
+1188.629004	3
+1153.26912	3.25
+1121.726004	3.5
+1092.415035	3.75
+1065.750065	4
+1042.61099	4.25
+1022.648076	4.5
+1005.397982	4.75
+990.4706816	5
+966.1023663	5.5
+946.5027198	6
+470.0000000	300