Cleanup more BJC_PASSWORD examples

.env.example

@@ -1,5 +1,4 @@
 attr_encrypted_key=[NEW ONE]
-BJC_PASSWORD=blank
 CLEVER_CLIENT_ID=IGNORE
 CLEVER_CLIENT_SECRET=IGNORE
 email_password=[NEW ONE]
@@ -23,4 +22,4 @@ SECRET_KEY_BASE=[NEW ONE]
 SENTRY_DSN=
 SNAP_CLIENT_SECRET='ignore'
 SNAP_CLIENT_URL='https://forum.snap.berkeley.edu/session/sso_provider'
-teacher_key=
+teacher_key=

.gitignore

@@ -29,8 +29,8 @@ config/master.key
 # config/secrets.yml
 
 # dotenv
-# TODO Comment out this rule if environment variables can be committed
 .env
+!.env.example
 
 ## Environment normalization:
 /.bundle
@@ -70,10 +70,6 @@ yarn-debug.log*
 /storage/*
 !/storage/.keep
 
-# Ignore postgress-related database files
-my_database_development
-my_database_test
-
 # A copy of GitHub's template .gitignore for all JetBrains IDEs.
 # It can be found here: https://github.com/github/gitignore/blob/master/Global/JetBrains.gitignore
 

app/views/email_templates/_liquid_fields.erb

@@ -15,10 +15,6 @@
         <td><%= value %></td>
       </tr>
     <%- end %>
-    <tr>
-      <td><code>{{bjc_password}}</code></td>
-      <td>(Should no longer be relevant)</td>
-    </tr>
     <tr>
       <td><code>{{piazza_password}}</code></td>
       <td>(The current piazza sign up password)</td>