Update definition schema

Update definition schema due to recent fixes:
#1087
#1108

business/definitionService.js

@@ -34,7 +34,7 @@ const SPDX = require('@clearlydefined/spdx')
 const parse = require('spdx-expression-parse')
 const computeLock = require('../providers/caching/memory')({ defaultTtlSeconds: 60 * 5 /* 5 mins */ })
 
-const currentSchema = '1.6.1'
+const currentSchema = '1.7.0'
 
 const weights = { declared: 30, discovered: 25, consistency: 15, spdx: 15, texts: 15, date: 30, source: 70 }