Empire technology views

* Added new research-related constants

* Added set of views and functions to list empires' technologies. This
includes a view which determines the visibility of an in-progress
research's details, and a main list view.

legacyworlds-server-data/db-structure/tests/user/040-functions/040-empire/016-technology-make-identifier.sql

@@ -0,0 +1,14 @@
+/*
+ * Test privileges on emp.technology_make_identifier()
+ */
+BEGIN;
+
+	SELECT plan( 1 );
+	
+	SELECT diag_test_name( 'emp.technology_make_identifier() - No EXECUTE privilege' );
+	SELECT throws_ok( $$
+		SELECT emp.technology_make_identifier( 1 , '' , FALSE );
+	$$ , 42501 );
+	
+	SELECT * FROM finish( );
+ROLLBACK;

legacyworlds-server-data/db-structure/tests/user/040-functions/040-empire/040-technology-visibility-view.sql

@@ -0,0 +1,15 @@
+/*
+ * Test privileges on emp.technology_visibility_view
+ */
+BEGIN;
+	\i utils/strings.sql
+
+	SELECT plan( 1 );
+
+	SELECT diag_test_name( 'emp.technology_visibility_view - No SELECT privilege' );
+	SELECT throws_ok( $$
+		SELECT * FROM emp.technology_visibility_view;
+	$$ , 42501 );
+
+	SELECT * FROM finish( );
+ROLLBACK;

legacyworlds-server-data/db-structure/tests/user/040-functions/040-empire/050-technologies-view.sql

@@ -0,0 +1,15 @@
+/*
+ * Test privileges on emp.technologies_v2_view
+ */
+BEGIN;
+	\i utils/strings.sql
+
+	SELECT plan( 1 );
+
+	SELECT diag_test_name( 'emp.technologies_v2_view - SELECT privilege' );
+	SELECT lives_ok( $$
+		SELECT * FROM emp.technologies_v2_view;
+	$$ );
+
+	SELECT * FROM finish( );
+ROLLBACK;