"About Firmware" menu and change to bed leveling.

Added an "About Firmware" menu item to show splash screen.
Switched from ABL_LINEAR to ABL_BILINEAR since my experiments
show a better first layer.

Marlin/Conditionals_LulzBot.h

@@ -62,7 +62,7 @@
     #error      Angelfish_Aero           // Titan AERO (Angelfish)
 #endif
 
-#define LULZBOT_FW_VERSION ".14"
+#define LULZBOT_FW_VERSION ".15"
 
 // Select options based on printer model
 

Marlin/Configuration.h

@@ -851,7 +851,7 @@
 #if defined(LULZBOT_AUTO_BED_LEVELING_3POINT)
 #define AUTO_BED_LEVELING_3POINT LULZBOT_AUTO_BED_LEVELING_3POINT
 #else
-#define AUTO_BED_LEVELING_LINEAR
+#define AUTO_BED_LEVELING_BILINEAR
 #endif
 //#define AUTO_BED_LEVELING_BILINEAR
 //#define AUTO_BED_LEVELING_UBL

Marlin/language_en.h

@@ -735,7 +735,7 @@
   #define MSG_DELTA_HEIGHT_CALIBRATE          _UxGT("Set Delta Height")
 #endif
 #ifndef MSG_INFO_MENU
-  #define MSG_INFO_MENU                       _UxGT("About Printer")
+  #define MSG_INFO_MENU                       _UxGT("About Firmware")
 #endif
 #ifndef MSG_INFO_PRINTER_MENU
   #define MSG_INFO_PRINTER_MENU               _UxGT("Printer Info")

Marlin/ultralcd.cpp

@@ -876,6 +876,18 @@ void kill_screen(const char* lcd_msg) {
 
   #endif
 
+  /**
+   *
+   * Extra menu item to show LulzBot firmware version
+   *
+   */
+  #if defined(LULZBOT_SHOW_CUSTOM_BOOTSCREEN)
+  void lcd_show_custom_bootscreen() {
+    if (lcd_clicked) { defer_return_to_status = false; return lcd_goto_previous_menu(); }
+    lcd_custom_bootscreen();
+  }
+  #endif
+
   /**
    *
    * "Main" menu
@@ -918,6 +930,9 @@ void kill_screen(const char* lcd_msg) {
       #endif
     }
     MENU_ITEM(submenu, MSG_CONTROL, lcd_control_menu);
+    #if defined(LULZBOT_SHOW_CUSTOM_BOOTSCREEN)
+    MENU_ITEM(submenu, MSG_INFO_MENU, lcd_show_custom_bootscreen);
+    #endif
 
     #if ENABLED(SDSUPPORT)
       if (card.cardOK) {