Column related issues

[roman-orekhov]

Columnizer is a great feature! Seems under-utilized however

1. There is no way to limit a search to a column
2. There is no way to limit a highlight to a column
3. There is no way to use columns in filters
4. Column widths do not persist
5. No sorting provided
6. Double-clicks on column header borders set wrong column widths (slightly less than needed, last column by several symbols, all the other columns - by slightly more than 1 symbol)

[Hirogen]

1 & 2) searches and highlights are always done on the full logline, unimpeded by the columnizer.
the columnizer is more a "visual" sugar to display logfiles in a human readable and understandable way. The are implemented via the ColumnizerLib.

3. this needs to be implemented per columnizer and is a feature for the columnizerlib
4. this needs to be added to the persister based on the selected columnizer for the given file
5. since columnizer are only display sugar, sorting was never implemented, and is probably questionable for rolling logfiles were lines are read one by one. Not sure with static files, since we only read the logfile one line after the other and dont manipulate the data.
6. this sounds like a bug