adds device generation and connection

- fingerprint generated first time device connects
- saved to database and served to device
- connection status set to true, once device requests first package
- user can link device via online form

server/template/devices.html

@@ -37,6 +37,9 @@
         <div style="width: 7rem; margin: 1rem">{{ form.deviceName.label }}</div>
         <div style="width: 12rem; margin: 1rem">{{ form.deviceName(size=24) }}</div>
         <div style="with: 7rem; margin: 1rem">{{ form.submit() }}</div>
+        {% for error in form.deviceName.errors %}
+        <span style="color: red;">[{{ error }}]</span>
+        {% endfor %}
     </div> 
     </form>