Fix ambiguous lsblk behaviour in LUKS/LVM use cases

[olivermg]

Fixes #252

Adds

sed -r 's/^[^[:alnum:]]+//'

to relevant locations of lsblk usage in order to remove ambiguous behaviour in certain partition layouts (refer to issue #252 for more info).

Please double check this, as the use case that this patch has helped me with probably only used a certain portion of the patched lines. I've tried to fix this throughout all scripts (just found relevant lines in util-base.sh and util-disk.sh).

[Chrysostomus]

Thanks! However, the version on github is outdated, the development has moved to gitlab:

https://gitlab.manjaro.org/applications/manjaro-architect

If possible, could you provide the changes against that repo? Either way, I'll try to implement the fix once I get working hardware.

[olivermg]

Sure, I'll file it over there :-)