TCP Server: allow full 65 characters

[cyroxx]

We currently enforce a line-wrap after 65 characters, whatever the characters are. So if somebody sends us lines of 65 characters + newline, we actually get 2 newlines: the one that is enforced and the one from the incoming request.

We should skip enforcing line wrap in that case since the client already sends us the newline.

[ArchibaldBienetre]

There's a similar Issue request by @sirexeclp :
#73 + follow-up #74

[cyroxx]

btw, the default number of characters is 78. The 65 characters was just a setting that i used at some point for demonstration purposes when the device is unattended.
The enforced line-wrap (see above) still needs to be eliminated, though.

[sirexeclp]

see http://hc-ddr.hucki.net/wiki/doku.php/z9001/erweiterungen/s3004

Code	Funktion	Bemerkung
80H	Randlöser	Rand lösen
8FH	Randlöser ON (extern)	Rand rechts öffnen (*); Extremer Randlöser. Die Randeinstellung wird bis zum Eintreffen von SETRD nicht mehr berücksichtigt.

[sirexeclp]

also i've copy pasted the table into our wiki, so we can add our own comments, to make things clearer
and ofc. translate it
https://github.com/Chaostreff-Potsdam/erika3004/wiki/Control-characters