Stanfordize LMS emails

Adjust language of LMS emails to work specifically for Stanford. Here
there be dragons: lots of ugly conditionals that will need to be
changed once we develop a way to "theme" arbitrary strings throughout
the site.

lms/templates/emails/activation_email.txt

+<%namespace file="../main.html" import="stanford_theme_enabled" />
+
 Thank you for signing up for ${settings.PLATFORM_NAME}! To activate
 your account, please copy and paste this address into your web
 browser's address bar:
@@ -8,7 +10,15 @@ browser's address bar:
   http://${ site }/activate/${ key }
 % endif
 
-If you didn't request this, you don't need to do anything; you won't
-receive any more email from us. Please do not reply to this e-mail; if
-you require assistance, check the help section of the
-${settings.PLATFORM_NAME} web site.
+## Temporary hack until we develop a better way to adjust language
+% if stanford_theme_enabled():
+  If you didn't request this, you don't need to do anything; you won't
+  receive any more email from us. Please do not reply to this e-mail;
+  if you require assistance, check the about section of the
+  ${settings.PLATFORM_NAME} Courses web site.
+% else:
+  If you didn't request this, you don't need to do anything; you won't
+  receive any more email from us. Please do not reply to this e-mail;
+  if you require assistance, check the help section of the
+  ${settings.PLATFORM_NAME} web site.
+% endif

lms/templates/emails/confirm_email_change.txt

 <%! from django.core.urlresolvers import reverse %>
-This is to confirm that you changed the e-mail associated with
-${settings.PLATFORM_NAME} from ${old_email} to ${new_email}. If you
-did not make this request, please contact us immediately. Contact
-information is listed at:
+<%namespace file="../main.html" import="stanford_theme_enabled" />
+## Again, ugly hack that needs to be changed
+## TODO: this probably needs better formatting to look nice in an
+##       email client (Mako leaves awkward whitespace)
+% if stanford_theme_enabled():
+  This is to confirm that you changed the e-mail associated with
+  ${settings.PLATFORM_NAME} from ${old_email} to ${new_email}. If you
+  did not make this request, please contact us at
 
-% if is_secure:
-  https://${ site }${reverse('contact')}
+  ${settings.CONTACT_EMAIL}
 % else:
-  http://${ site }${reverse('contact')}
+  This is to confirm that you changed the e-mail associated with
+  ${settings.PLATFORM_NAME} from ${old_email} to ${new_email}. If you
+  did not make this request, please contact us immediately. Contact
+  information is listed at:
+
+  % if is_secure:
+    https://${ site }${reverse('contact')}
+  % else:
+    http://${ site }${reverse('contact')}
+  % endif
 % endif
 
 We keep a log of old e-mails, so if this request was unintentional, we

lms/templates/emails/email_change.txt

+<%namespace file="../main.html" import="stanford_theme_enabled" />
 We received a request to change the e-mail associated with your
 ${settings.PLATFORM_NAME} account from ${old_email} to ${new_email}.
 If this is correct, please confirm your new e-mail address by
@@ -9,7 +10,15 @@ visiting:
  http://${ site }/email_confirm/${ key }
 % endif
 
-If you didn't request this, you don't need to do anything; you won't
-receive any more email from us. Please do not reply to this e-mail; if
-you require assistance, check the help section of the
-${settings.PLATFORM_NAME} web site.
+## TODO: fix this ugly hack
+% if stanford_theme_enabled():
+  If you didn't request this, you don't need to do anything; you won't
+  receive any more email from us. Please do not reply to this e-mail;
+  if you require assistance, check the about section of the
+  ${settings.PLATFORM_NAME} Courses web site.
+% else:
+  If you didn't request this, you don't need to do anything; you won't
+  receive any more email from us. Please do not reply to this e-mail;
+  if you require assistance, check the help section of the
+  ${settings.PLATFORM_NAME} web site.
+% endif

lms/templates/emails/reject_name_change.txt

+<%namespace file="../main.html" import="stanford_theme_enabled" />
 (Not currently used)
 
-We are sorry. Our course staff did not approve your request to change
-your name from ${old_name} to ${new_name}. If you need further
-assistance, please e-mail the course staff at ta@edx.org.
+## TODO: fix this ugly hack
+% if stanford_theme_enabled():
+  We are sorry. Our course staff did not approve your request to change
+  your name from ${old_name} to ${new_name}. If you need further
+  assistance, please e-mail the tech support at
+  ${settings.TECH_SUPPORT_EMAIL}.
+% else:
+  We are sorry. Our course staff did not approve your request to change
+  your name from ${old_name} to ${new_name}. If you need further
+  assistance, please e-mail the course staff at ta@edx.org.
+% endif

lms/templates/emails/welcome_body.txt

-${settings.PLATFORM_NAME} has launched! To log in, visit:
+<%namespace file="../main.html" import="stanford_theme_enabled" />
+## TODO: fix ugly hack
+% if stanford_theme_enabled():
+  ${settings.PLATFORM_NAME} Courses has launched! To log in, visit:
+% else:
+  ${settings.PLATFORM_NAME} has launched! To log in, visit:
+% endif
 
 % if is_secure:
  https://${settings.SITE_NAME}
@@ -14,7 +20,12 @@ place to reset it.
 
 Thanks for joining us for the ride!
 
-The ${settings.PLATFORM_NAME} team
+## TODO: fix ugly hack
+% if stanford_theme_enabled():
+  The ${settings.PLATFORM_NAME} Courses team
+% else:
+  The ${settings.PLATFORM_NAME} team
+% endif
 
 (Please note that this e-mail address does not receive e-mails --
 if you need assistance, please use the help section of the web

lms/templates/emails/welcome_subject.txt

-Welcome to ${settings.PLATFORM_NAME}!
+<%namespace file="../main.html" import="stanford_theme_enabled" />
+## TODO: fix ugly hack
+% if stanford_theme_enabled():
+  Welcome to ${settings.PLATFORM_NAME} Courses!
+% else:
+  Welcome to ${settings.PLATFORM_NAME}!
+% endif