New features for editgrid

[gleu]

• sort with double click on a column
• auto-fit with double click on a column border
• arrow icon on the sorted column header (might get fun with sorting with more than one column)
• save default order for each table

[gleu]

It would be better if we can use the Query/Editor? grid as in Delphi DBGrid.

There is two states of the BLOB fields, first is empty (NULL), and the second is [BLOB] (filled with something). PGAdmin is very slow when I try to see a table with full of blobs, or long "text" (memo) fields. The Delphi kind solution is that we don't show the blob fields fully, only the state, or they are text type, only a limited size (100 char) with "...".

Some editor dialog is needed for edit blob (or memo) fields. Most important functions are "SaveToFile?", "LoadFromFile?" and "Clear".

Memo (text with undefined size) fields are editable by a dialog with a Memo control (TMemo, EditBox?, I don't know what possible in the source).

This is very basic function for better work with tables, edit long fields.

[gleu]

Another one (from J Hobbs): Don't display bytea columns, or display them better