Update dashboard navigation and login redirect

- Modify login route to redirect to home index instead of dashboard
- Refresh dashboard sidebar icons with new SVG designs
- Remove Analytics sidebar item from dashboard template

app.py

@@ -391,7 +391,7 @@ def login():
     #flask.flash('Logged in successfully.')
 
     next = request.args.get('next')
-    return redirect(next or url_for('dashboard'))
+    return redirect(next or url_for('home.index'))
 
 @app.route('/signup', methods=['GET', 'POST'])
 def signup():