Add --more-notices; JSON & Network diff suppressed; stale submit applog shortened

Couple of vanity patches for applog entries & curses display readout.
Cool lukedash, just thought some of these may be useful in suppressing readout spam, as they're pretty helpful in sgminer for suppressing json spam from mrr & betarigs rental services.  Wasn't sure if it applied here but ya know, was just offering a helping hand and if it or none of the above ever applies, much appreciated for letting me know.  I'll kill the pull if you don't find any of it useful for your particular set of circumstances; let me know.