0.12.0: database update: added missing octave field, added preview_image field

corelib/src/resources/DatabaseSchema.sql.in

@@ -76,6 +76,7 @@ CREATE TABLE Map_Node_Word (
 	size INTEGER NOT NULL,
 	dir FLOAT NOT NULL,
 	response FLOAT NOT NULL,
+	octave INTEGER NOT NULL,
 	depth_x FLOAT,
 	depth_y FLOAT,
 	depth_z FLOAT,
@@ -103,6 +104,7 @@ CREATE TABLE Statistics (
 
 CREATE TABLE Admin (
 	version TEXT,
+	preview_image BLOB,
 	time_enter DATE
 );