fix: address PR #69 review feedback

- Remove WIDGET_ANALYSIS.md (working document, not permanent docs)
- Renumber files sequentially: 01b→02, 02→03, 03→04
- Remove nonsensical LanguageSelector datasource (DemoItem entity)

Author: engalar

mdl-examples/widgetdemo/01b-snippet.mdl mdl-examples/widgetdemo/02-snippet.mdlmdl-examples/widgetdemo/01b-snippet.mdl renamed to mdl-examples/widgetdemo/02-snippet.mdl

@@ -1,4 +1,4 @@
--- WidgetDemo: Button showcase snippet (referenced by 02-showcase-page)
+-- WidgetDemo: Button showcase snippet (referenced by 03-showcase-page)
 
 CREATE SNIPPET WidgetDemo.SNIPPET_ButtonShowcase {
   ACTIONBUTTON btnInfo (Caption: 'Info Button', Action: CLOSE_PAGE, ButtonStyle: Info)

…examples/widgetdemo/02-showcase-page.mdl …examples/widgetdemo/03-showcase-page.mdlmdl-examples/widgetdemo/02-showcase-page.mdl renamed to mdl-examples/widgetdemo/03-showcase-page.mdl mdl-examples/widgetdemo/02-showcase-page.mdl renamed to mdl-examples/widgetdemo/03-showcase-page.mdl

@@ -425,10 +425,7 @@ CREATE OR REPLACE PAGE WidgetDemo.WidgetDemo_Showcase (
     -- 8f: Language + Accessibility
     ROW rowS8f {
       COLUMN cS8f1 (DesktopWidth: 6) {
-        PLUGGABLEWIDGET 'com.mendix.widget.web.languageselector.LanguageSelector' langSel1 (
-          DataSource: DATABASE FROM WidgetDemo.DemoItem,
-          languageCaption: '''en_US'''
-        )
+        PLUGGABLEWIDGET 'com.mendix.widget.web.languageselector.LanguageSelector' langSel1
       }
       COLUMN cS8f2 (DesktopWidth: 6) {
         PLUGGABLEWIDGET 'com.mendix.widget.web.accessibilityhelper.AccessibilityHelper' accHelper1 (targetSelector: '.mx-name-accHelper1') {

…ples/widgetdemo/03-seed-and-navigate.mdl …ples/widgetdemo/04-seed-and-navigate.mdlmdl-examples/widgetdemo/03-seed-and-navigate.mdl renamed to mdl-examples/widgetdemo/04-seed-and-navigate.mdl mdl-examples/widgetdemo/03-seed-and-navigate.mdl renamed to mdl-examples/widgetdemo/04-seed-and-navigate.mdl

@@ -1,5 +1,5 @@
 -- WidgetDemo: seed data microflow + navigation
--- This script is part of the WidgetDemo module bootstrap (run after 01 and 02)
+-- This script is part of the WidgetDemo module bootstrap (run after 01, 02 and 03)
 
 /**
  * Seeds DemoItem data and opens the showcase page.