Fix: Database migration and mail template files were not included in dist.

* Moved copying server-build/ from grunt to package.json
  using rsync to make sure to copy exactly what is needed
  and resolve symlinks correctly.

Gruntfile.js

@@ -354,18 +354,6 @@ module.exports = function (grunt) {
                         dest: '<%= yeoman.dist %>/client/images',
                         src: ['generated/*']
                     },
-                    {
-                        expand: true,
-                        cwd: 'server-build',
-                        dest: '<%= yeoman.dist %>/server',
-                        src: [
-                            '{,**/}*.html',
-                            '{,**/}*.template',
-                            '{,**/}*.js',
-                            '{,**/}*.sql',
-                            '{,**/}*.txt'
-                        ]
-                    },
                     {
                         expand: true,
                         cwd: 'shared',