accept_eula function, eula property added
added accept EULA button to webui

alert shown at top of webui if eula === false, but missing or true is
A-OK
added vanilla 1.7.10 to stock_profiles

added instead of replacing 1.7.9 to ease troubleshooting when users are
unable to create a 1.7.10 server but find they can successfully do 1.7.9