Update the database schema to add the missing table graphs.

docs/db_schema/database.xml

@@ -563,4 +563,24 @@
 <part>id</part>
 </key>
 </table>
+<table x="834" y="616" name="graphs">
+<row name="id" null="1" autoincrement="1">
+<datatype>integer</datatype>
+<default>NULL</default></row>
+<row name="graph" null="0" autoincrement="0">
+<datatype>string</datatype>
+</row>
+<row name="definition" null="1" autoincrement="0">
+<datatype>text</datatype>
+<default>NULL</default></row>
+<row name="stack_axis" null="1" autoincrement="0">
+<datatype>string</datatype>
+<default>NULL</default></row>
+<row name="stack_granularity" null="1" autoincrement="0">
+<datatype>string</datatype>
+<default>NULL</default></row>
+<key type="PRIMARY" name="">
+<part>id</part>
+</key>
+</table>
 </sql>