lint: Put opening brace on same line as function

Normally I would let `eslint --fix` do this for me, but there's a bug
that causes:

    const x = function ()
    {
      // ...
    };

to become:

    const x = ()
    => {
      // ...
    };

which ESLint thinks is a syntax error. (It probably is; I don't know
enough about the automatic semicolon insertion rules to be confident.)

tests/backend/specs/api/sessionsAndGroups.js

@@ -289,8 +289,7 @@ const endPoint = function(point) {
   return `/api/${apiVersion}/${point}?apikey=${apiKey}`;
 };
 
-function makeid()
-{
+function makeid() {
   let text = '';
   const possible = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';