Rework account views and addition flow (#1324)

* Move accountable partials

* Split accountables into separate view partials

* Fix test

* Add form to permitted partials

* Fix failing system tests

* Update new account modal views

* New sync algorithm implementation

* Update account system test assertions to match new behavior

* Fix off by 1 date error

* Revert new balance sync algorithm

* Add missing account overviews

app/models/investment.rb

@@ -46,4 +46,8 @@ class Investment < ApplicationRecord
   rescue Money::ConversionError
     TimeSeries.new([])
   end
+
+  def color
+    "#1570EF"
+  end
 end