Feature/multi user support

[fccview]

changelog

• Enable Multi user support
• Session persistent User filtering system
• Manually run/pause/start cronjobs

[DVDAndroid]

I have left a comment. Playing with pause and resume button I got some issues.
String and line manipulation is kinda delicate.

Take for example this crontab file:

@reboot script_reboot
# s1
16 3 * * *		script1
# job2
*/15 * * * *	echo "aa   bb"

I have not tested the full app, but extracted parseJobsFromLines and pauseJobInLines, removed types and created a simple js file

let lines = stringabove.split("\n");

let x = parseJobsFromLines(lines, 'myuser')
let y = pauseJobInLines(lines, 0)