[Error] - hardcoded paths using 'pi' user

[danielrbjo]

Describe the bug
The default installation script presumes the user 'pi' is universal and uses it in some, not all, path references. For users, like me, that always disable the 'pi' user for security purposes, this has the effect of preventing both complete installation and successful operation.

Recommendation
make all paths referential to current user or user-definable

Server information (please complete the following information):

• OS: RaspberryOS
• Python version [e.g. 3.7.3]
• SDR device NESDR SmartTee + SAWbird LNA

Additional context
I didn't note exactly which files needed to be updated to referential paths, but it wasn't too many. Is now working like a champ!
Update: Grep for '/pi' in files returns -
filename/line number/search term:

INSTALL.md:180:/pi/
INSTALL.md:185:/pi/
install.sh:195:/pi/
ISS.md:29:/pi/
receive_meteor.sh:85:/pi/
receive_meteor.sh:86:/pi/
receive_meteor.sh:91:/pi/
receive.sh:56:/pi/
receive.sh:58:/pi/
receive.sh:61:/pi/
receive.sh:72:/pi/
schedule_iss.sh:34:/pi/
schedule_meteor.sh:34:/pi/
schedule_sat.sh:40:/pi/
templates/noaa.conf:1:/pi/
templates/webpanel/Model/Conn.php:5:/pi/
WORKING.md:42:/pi/