* initial commit
* feature: advanced configuration page
fixes#230
* add help page updates
* added menu links to perlfunc.pm
* add default value for serverpath
* move "Reset to Firstboot" button from setup page to advancedconfig page
* secure page
minor ui changes
* center the help icon
* implement callback capabilities pre/post
* hardening uci calls to prevent command injection attacks
* moved settings to custom aredn uci file
* resolve shellcheck warnings
Move httpd.conf to not store password and instead depend on the shadow password file.
Also tag the 40_aredn_migrate-httpdconf script to be +x. Not strictly necessary but wish to have this standard
Change-Id: I018d9a3294e45af2316b3c3947ef2a7d8081268b
dman776