Moves all new styles to dashboard.scss

app/assets/stylesheets/application.scss

@@ -7,11 +7,8 @@
 @import 'layout';
 @import 'participation';
 @import 'pages';
-@import 'proposal';
-@import 'proposal-graph';
-@import 'dashboard_mailer_preview';
-@import 'dashboard_poster_preview';
-@import 'poll';
+@import 'dashboard_poster_pdf';
+@import 'dashboard';
 @import 'legislation';
 @import 'legislation_process';
 @import 'community';