Workaround circular dependency and fix invalid json response.

The share module has a circular dependency with maps, and those should
be separated. Workaround for now will do.

POST response must return a valid json, as we currently handle errors in
a map update (and redirect to login page).

Author: cdaniel

server/maps.js

@@ -182,9 +182,8 @@ var mapmodule = function(db, share) {
                     res.statusCode = 500;
                     res.send(JSON.stringify(err));
                 } else {
-                    res.writeHead(200, {
-                        'content-type' : 'text/html'
-                    });
+                    res.setHeader('Content-Type', 'application/json');
+                    res.send(JSON.stringify({}));
                     res.end();
                 }
             });
@@ -237,9 +236,8 @@ var mapmodule = function(db, share) {
                             res.statusCode = 500;
                             res.send(JSON.stringify(err));
                         } else {
-                            res.writeHead(200, {
-                                'content-type' : 'text/html'
-                            });
+                            res.setHeader('Content-Type', 'application/json');
+                            res.send(JSON.stringify({}));
                             res.end();
                         }
                     });
@@ -278,7 +276,7 @@ var mapmodule = function(db, share) {
                     if (!maps[0].anonymousShare) {
                         maps[0].anonymousShare = false;
                     } else {
-                        maps[0].anonymousShareLink = share.constructSharingURL(req, mapId);
+                        maps[0].anonymousShareLink = share[0].constructSharingURL(req, mapId);
                     }
                     if(!maps[0].preciseShare){
                         maps[0].preciseShare = [];

server/server.js

@@ -89,13 +89,15 @@ var WardleyMapsApp = function(configOptions) {
 
 	    var userProvider = require('./user-provider')(app);
 
-		self.db = require('./db')(configOptions.databaseConnectionString);
+        var share = [null];
+	    
+	    self.db = require('./db')(configOptions.databaseConnectionString);
 		self.exportmap = new require('./export')(self.db);
-		self.maps = new require('./maps')(self.db, self.share);
+		self.maps = new require('./maps')(self.db, share);
 
-		var share = require('./router/share.js')('/share', self.db, userProvider.loginRequired, self.maps, self.exportmap);
+		share[0] = require('./router/share.js')('/share', self.db, userProvider.loginRequired, self.maps, self.exportmap);
 
-		app.use('/share', share.router);
+		app.use('/share', share[0].router);
 		app.use('/profile', userProvider.loginRequired, require('./router/profilerouter.js')().router);
 		app.use('/api', userProvider.authenticationRequired, require('./router/apirouter.js')(self.maps, self.exportmap).router);
 		app.use('/', userProvider.loginRequired, require('./router/mainrouter.js')(self.maps).router);