Disable editing columns in "Display in Hex" mode

This is a workaround for a potential data loss/corruption bug until we really fix this (see #1876)

Source/SPTableContentDelegate.m

@@ -261,11 +261,12 @@ - (BOOL)tableView:(NSTableView *)tableView shouldEditTableColumn:(NSTableColumn
				[tableContentView reloadData];
			}
			
			// Retrieve the column definition
			NSDictionary *columnDefinition = [cqColumnDefinition objectAtIndex:[[tableColumn identifier] integerValue]];

			// Open the editing sheet if required
			if ([tableContentView shouldUseFieldEditorForRow:rowIndex column:[[tableColumn identifier] integerValue] checkWithLock:NULL]) {
				
				// Retrieve the column definition
				NSDictionary *columnDefinition = [cqColumnDefinition objectAtIndex:[[tableColumn identifier] integerValue]];
				BOOL isBlob = [tableDataInstance columnIsBlobOrText:[[tableColumn headerCell] stringValue]];
				
				// A table is per definition editable
@@ -318,6 +319,7 @@ - (BOOL)tableView:(NSTableView *)tableView shouldEditTableColumn:(NSTableColumn

				if ([[columnDefinition objectForKey:@"typegrouping"] isEqualToString:@"binary"] && [prefs boolForKey:SPDisplayBinaryDataAsHex]) {
					[fieldEditor setTextMaxLength:[[self tableView:tableContentView objectValueForTableColumn:tableColumn row:rowIndex] length]];
					isFieldEditable = NO;
				}
				
				NSInteger editedColumn = 0;
@@ -345,6 +347,13 @@ - (BOOL)tableView:(NSTableView *)tableView shouldEditTableColumn:(NSTableColumn
				return NO;
			}
			
			// TODO: Fix editing of "Display as Hex" columns and remove this (also see above)
			if ([[columnDefinition objectForKey:@"typegrouping"] isEqualToString:@"binary"] && [prefs boolForKey:SPDisplayBinaryDataAsHex]) {
				NSBeep();
				[SPTooltip showWithObject:NSLocalizedString(@"Disable \"Display Binary Data as Hex\" in the View menu to edit this field.",@"Temporary : Tooltip shown when trying to edit a binary field in table content view while it is displayed using HEX conversion")];
				return NO;
			}
			
			return YES;
		}