Added separate log message for total paid mismatch

Rather than using the "Receiver Email Mismatch" log message for when the paid value is the issue, log a separate message.
Fixed indenting
Merge pull request #1358 from eka7a/master

Fixed strlen character
utf8_substr fix

Should fix upgrade issues caused by PHP considering int 0 equal to null
Merge pull request #1360 from opencarthelp/master

utf8_substr fix
Merge pull request #1356 from Turnerj/patch-1

Added separate log message for total paid mismatch
Added nl2br opening times on contact page
Changed Button Continue Value (Continue -> Submit)
Added Meta Tag Keyword on Homepage