Added classes to manage simple tabular data of known structure using a

popup containing a wxGrid object.

BasePicker : Abstract class adding a popup to wxPickerBase  styled with
a wxTextCtrl.
BaseGridPicker : Abstract class adding a wxGrid in the popup.

JsonGridPickerCtrl : UI control storing the tabular data in a JSON
array.
LBoundJsonGridPicker : connect JsonGridPicker to database.
LGridJsonCellEditor : use LBoundJsonGridPicker in other wxGrid objects.
LGridJsonCellRenderer : render cell JSON data.

XmlGridPickerCtrl : UI control storing the tabular data in as XML
document.
LBoundXmlGridPicker : connect XmlGridPicker to database.
LGridXmlCellEditor : grid editor for LBoundXmlGridPicker.
LGridXmlCellRenderer : grid renderer for LBoundXmlGridPicker.

JsonHelper and XmlHelper : for applications to quickly get intent value
from database data..

The structure of managed tabular data :

Column 1 : Intent - this is what we want to store/edit. This can be
telephone numbers, email addresses, instant messaging addresses...
any single line piece of information that can exist many times for one
entity (person, company...).
Column 2 : Type - A short description of the intent : 'Home, Work,
Mobile, Fax, Other...'. It is displayed in a non editable wxComboBox.
Column 3 : Preferred - One line of data can be selected as the preferred
one. It is not mandatory, but it must be a single choice.
Column 4 : Notes - single line notes.

Adjust sql scripts and L7.dox.
Applied ANSI formatting style to all files.

Other changes :

Work around a nasty misbehavior.
Grid columns edited by a translated combobox expect full string
data as cell values. LResultSet::BEData() will report these mapped strings,
instead of database real data. LBoundComboBox::IsDirty() will always be
true even if the editor is unchanged once created.
Simplest workaround : disconnect m_BoundComboBox if unchanged.

LGridTextEditor::ProvideFormEditor() : set the form editor's value
explicitely.; wxTextCtrl does not interpret data it receives

LBoundControl::SetNull must be void.

LBoundGrid : Unbind:: instructions should limit to the widget's id, like Bind::

LConnection::GetReturnedKeys should return NULL.
LConnection::SetData should return void.

Notes : wxJSON must be configured with the same prefix as wxWidgets,
here /usr/local/{wxWidgets,wxWidgets-Release}.

L7/nbproject/private/c_standard_headers_indexer.c

@@ -40,21 +40,21 @@
 
 // List of standard headers was taken in http://en.cppreference.com/w/c/header
 
-#include <assert.h> 	 // Conditionally compiled macro that compares its argument to zero
-#include <ctype.h> 	 // Functions to determine the type contained in character data
-#include <errno.h> 	 // Macros reporting error conditions
-#include <float.h> 	 // Limits of float types
-#include <limits.h> 	 // Sizes of basic types
-#include <locale.h> 	 // Localization utilities
-#include <math.h> 	 // Common mathematics functions
-#include <setjmp.h> 	 // Nonlocal jumps
-#include <signal.h> 	 // Signal handling
-#include <stdarg.h> 	 // Variable arguments
-#include <stddef.h> 	 // Common macro definitions
-#include <stdio.h> 	 // Input/output
-#include <string.h> 	 // String handling
-#include <stdlib.h> 	 // General utilities: memory management, program utilities, string conversions, random numbers
-#include <time.h> 	 // Time/date utilities
+#include <assert.h>   // Conditionally compiled macro that compares its argument to zero
+#include <ctype.h>   // Functions to determine the type contained in character data
+#include <errno.h>   // Macros reporting error conditions
+#include <float.h>   // Limits of float types
+#include <limits.h>   // Sizes of basic types
+#include <locale.h>   // Localization utilities
+#include <math.h>   // Common mathematics functions
+#include <setjmp.h>   // Nonlocal jumps
+#include <signal.h>   // Signal handling
+#include <stdarg.h>   // Variable arguments
+#include <stddef.h>   // Common macro definitions
+#include <stdio.h>   // Input/output
+#include <string.h>   // String handling
+#include <stdlib.h>   // General utilities: memory management, program utilities, string conversions, random numbers
+#include <time.h>   // Time/date utilities
 #include <iso646.h>      // (since C95) Alternative operator spellings
 #include <wchar.h>       // (since C95) Extended multibyte and wide character utilities
 #include <wctype.h>      // (since C95) Wide character classification and mapping utilities