Better import instructions, remove ambiguous field (#1284)

* Remove ambiguous institution field

* Add import instructions

* Fix system test

* Remove lint and i18n normalization checks in CI

config/locales/views/accounts/en.yml

@@ -87,12 +87,10 @@ en:
       no_accounts: No accounts yet
     form:
       balance: Current balance
-      institution: Financial institution
       name_label: Account name
       name_placeholder: Example account name
       start_balance: Start balance (optional)
       start_date: Start date (optional)
-      ungrouped: "(none)"
     header:
       accounts: Accounts
       manage: Manage accounts

config/locales/views/imports/en.yml

@@ -27,12 +27,14 @@ en:
         tag_mapping_title: Assign your tags
     uploads:
       show:
-        description: Paste or upload your CSV file below.
+        description: Paste or upload your CSV file below.  Please review the instructions
+          in the table below before beginning.
         instructions_1: Below is an example CSV with columns available for import.
         instructions_2: Your CSV must have a header row
         instructions_3: You may name your columns anything you like.  You will map
           them at a later step.
         instructions_4: Columns marked with an asterisk (*) are required data.
+        instructions_5: No commas, no currency symbols, and no parentheses in numbers.
         title: Import your data
   imports:
     empty: