Makefile: add wipe-db and release rules + OPTS contains --progress by default.

makefile

@@ -2,7 +2,7 @@ all: build
 
 Q ?= @
 SHOULD_UPDATE = ./bin/should-update
-OPTS ?=
+OPTS ?= --progress
 
 NAME ?= John
 EMAIL ?= john@example.com
@@ -93,3 +93,9 @@ print-response-message-numbers:
 	make -s print-response-messages | grep -E "^[0-9]" | sort -n
 print-response-messages-without-comments:
 	make -s print-response-messages | grep -vE '^[[:blank:]]+#'
+
+wipe-db:
+	rm -r $(DATA_DIRECTORY)
+
+release:
+	make build-server OPTS="--progress --release"