gschem: The value column in the edit attributes dialog can grow to uncomfortable width

[KaiMartin]

Currently, the width of the value column in the edit attributes dialog is determined by the largest of its contents.
Values can be quite large. E.g., a comment, or a comma separated list of items. There is no mechanics in place to add linebreaks. Consequently, the width of the value column can exceed the width of the dialog, or even the kwidth of the monitor. Not only makes this for an inconvenient read. It also moves the flags columns out of sight.
Luckily, there is an automatic slider at the bottom of the table. This kind of works, but is a hassle.

Sugestion: Define a maximum widthn for the column. Ideally, gtk would break lines to make the value fit into this width. But a slider to scroll just the offending value would be fine, too. The benefit would be that the falags are never out of sight.

---<)kaimartin(>---