frontend: button to delete observations

added NOAA decoder

frontend: splitting html template into multiple files

updating frontend

frontend: updated observations page, marking start and stop time of recording in polar plot

polar plot shows start and end of capture

Merge branch 'master' of github.com:StarGate01/redsat

prediction script is using builtin timescale, fixing bug in get_overpasses method

frontend:

prediction script can now handle ongoing overpasses

rx_auto.sh: start receiver also if overpass has already started, fixing white space bug in satellite names

making receiver scripts work with satellite names containing white spaces

renamed old prediction script

updating shortcut script for overpass prediction

added shortcut script to start frontend