[isf-wifidog] Bug report: access statistics for node owners

[Max Horváth]

When logged in as a node owner and clicking "Get access statistics"  
on the "edit node"-page I'll get a SQL-error on the "report  
configuration"-page:

ExecSql() : An error occured while executing the following SQL query :
SELECT node_id, name from nodes JOIN node_stakeholders ON  
(nodes.node_id=node_stakeholders.node_id AND  
user_id='a3e97e6efc415d5b3080313e507806c7') WHERE 1=1 ORDER BY node_id

Error message :
ERROR: column reference "node_id" is ambiguous

Cheers, Max!