strlst/uni

strlst 2a08e1b109 fixes		2 lat temu
..
1-messtechnik	7f8ee11199 et: finalized 1-messtechnik	4 lat temu
2-filter	d7fe0fbc97 et: 2-filter finalization	4 lat temu
3-opv	70700d3139 et: minor change	4 lat temu
4-spektren	ec6d61d94c something something	3 lat temu
etvu2020	9ca31f375c new etvu exercises	2 lat temu
etvu2022	2a08e1b109 fixes	2 lat temu
simulations	5e2df117b9 et: removed .fft files	4 lat temu