Lunchflow integration (#259)

* First pass lunch flow

* Fixes

- Fix apikey not being saved properly due to provider no reload support
- Fix proper messages if we try to link existing accounts.

* Fix better error handling

* Filter existing transactions and skip duplicates

* FIX messaging

* Branding :)

* Fix XSS and linter

* FIX provider concern

- also fix code duplication

* FIX md5 digest

* Updated determine_sync_start_date to be account-aware

* Review fixes

* Broaden error catch to not crash UI

* Fix buttons styling

* FIX process account error handling

* FIX account cap and url parsing

* Lunch Flow brand

* Found orphan i18n strings

* Remove per conversation with @sokie

---------

Co-authored-by: Juan José Mata <juanjo.mata@gmail.com>

app/views/depositories/new.html.erb

@@ -3,6 +3,7 @@
              path: new_depository_path(return_to: params[:return_to]),
              show_us_link: @show_us_link,
              show_eu_link: @show_eu_link,
+             show_lunchflow_link: @show_lunchflow_link,
              accountable_type: "Depository" %>
 <% else %>
   <%= render DS::Dialog.new do |dialog| %>