Insufficient error messages

[jsbien]

When testing new marasca pages I get the message

Server error. This field is required.

which provides practically no information.

In some cases there is an option

Do you want to save HTML file sent by server?

This option should be always present, preferably suplemented by the exact address of the page (e.g. written in the log).

BTW, there is a typo in log messages: receieved.

[Michał Rudolf]

"which provides practically no information" - Blame the server - the error message comes directly from the server.

"The option should be always present" - this error is displayed in two cases:

• no proper response from the server (hence no source)

• server returns error page - then, only error message is useful, as the source is not the source of requested page anyway

[Michał Rudolf]

Fix a typo. See #181.

→ <<cset 4e188a0cf34b>>

[jsbien]

The problem did't occur recently