Makefile: enable debug builds for building under gdb
input: bugfix -- use .Elem() on .TypeOf(...) when we know we are going to be working on a pointer
lifelogd.conf: remove trailing comma from json
user: actually log the user in when everything goes well
user: use fmt.Sprintf to generate the query we want and check for sql.ErrNoRows
user: return when there was an error
auth: limit the password salt to the size requested