Calendar Lite 1.5: GingerCal is now Calendar Lite, new icon and reminder icon

Renames the app (label, texts, User-Agent, PRODID, APK) and uses the new launcher icon pack
(ldpi to xhdpi, master in art/) instead of drawing one at build time. Reminders show a white
calendar glyph in the status bar (stat_notify, 18-48 px) instead of the system's colour
alarm clock, which didn't fit the Gingerbread bar. The package name, database and signing key
stay, so it installs over GingerCal and keeps its data.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/org/gingercal/L.java

@@ -149,7 +149,7 @@ public final class L {
         put("Default calendar", "Calendario predeterminado");
 
         // settings
-        put("GingerCal settings", "Configuración de GingerCal");
+        put("Calendar Lite settings", "Configuración de Calendar Lite");
         put("Nextcloud server: your normal https:// address. This app brings its own modern TLS, so no bridge is needed, at home or away. Use an app password, not your real one.",
                 "Servidor Nextcloud: o teu enderezo https:// de sempre. Esta aplicación trae o seu propio TLS moderno, así que non fai falta ningunha ponte, nin na casa nin fóra. Usa un contrasinal de aplicación, non o teu contrasinal real.");
         put("Server address", "Enderezo do servidor");