dump script + updated SQL dumps

bin/dump.sql

@@ -0,0 +1,15 @@
+.mode insert branches
+.out db/main_branches.sql
+select * from branches;
+
+.mode insert notes
+.out db/main_notes.sql
+select * from notes;
+
+.mode insert images
+.out db/main_images.sql
+select * from images;
+
+.mode insert note_images
+.out db/main_note_images.sql
+select * from note_images;