Use the web_client_location parameter in default HTML templates. (#380)

Previously it was used only in the text portion of the email templates,
and not in the HTML portion. This updates it to use it in both places.

changelog.d/380.bugfix

@@ -0,0 +1 @@
+Use the `web_client_location` parameter in default templates for both text and HTML emails.

res/matrix-org/invite_template.eml

@@ -113,7 +113,7 @@ or iOS or Android on mobile.)</p>
 
 <p>
     <a
-    href="https://app.element.io/#/room/%(room_id_forurl)s?email=%(to_forurl)s&signurl=https%%3A%%2F%%2Fmatrix.org%%2F_matrix%%2Fidentity%%2Fapi%%2Fv1%%2Fsign-ed25519%%3Ftoken%%3D%(token)s%%26private_key%%3D%(ephemeral_private_key)s&room_name=%(room_name_forurl)s&room_avatar_url=%(room_avatar_url_forurl)s&inviter_name=%(sender_display_name_forurl)s&guest_access_token=%(guest_access_token_forurl)s&guest_user_id=%(guest_user_id_forurl)s">Join the conversation.</a>
+    href="%(web_client_location)s/#/room/%(room_id_forurl)s?email=%(to_forurl)s&signurl=https%%3A%%2F%%2Fmatrix.org%%2F_matrix%%2Fidentity%%2Fapi%%2Fv1%%2Fsign-ed25519%%3Ftoken%%3D%(token)s%%26private_key%%3D%(ephemeral_private_key)s&room_name=%(room_name_forurl)s&room_avatar_url=%(room_avatar_url_forurl)s&inviter_name=%(sender_display_name_forurl)s&guest_access_token=%(guest_access_token_forurl)s&guest_user_id=%(guest_user_id_forurl)s">Join the conversation.</a>
 </p>
 
 <br>

res/matrix-org/invite_template.eml.j2

@@ -116,7 +116,7 @@ or iOS or Android on mobile.)</p>
 
 <p>
     <a
-    href="https://app.element.io/#/room/{{ room_id|urlencode }}?email={{ to|urlencode }}&signurl=https%3A%2F%2Fmatrix.org%2F_matrix%2Fidentity%2Fapi%2Fv1%2Fsign-ed25519%3Ftoken%3D{{ token|urlencode }}%26private_key%3D{{ ephemeral_private_key|urlencode }}&room_name={{ room_name|urlencode }}&room_avatar_url={{ room_avatar_url|urlencode }}&inviter_name={{ sender_display_name|urlencode }}&guest_access_token={{ guest_access_token|urlencode }}&guest_user_id={{ guest_user_id|urlencode }}">Join the conversation.</a>
+    href="{{ web_client_location }}/#/room/{{ room_id|urlencode }}?email={{ to|urlencode }}&signurl=https%3A%2F%2Fmatrix.org%2F_matrix%2Fidentity%2Fapi%2Fv1%2Fsign-ed25519%3Ftoken%3D{{ token|urlencode }}%26private_key%3D{{ ephemeral_private_key|urlencode }}&room_name={{ room_name|urlencode }}&room_avatar_url={{ room_avatar_url|urlencode }}&inviter_name={{ sender_display_name|urlencode }}&guest_access_token={{ guest_access_token|urlencode }}&guest_user_id={{ guest_user_id|urlencode }}">Join the conversation.</a>
 </p>
 
 <br>

res/vector-im/invite_template.eml

@@ -128,7 +128,7 @@ room %(bracketed_room_name_forhtml)s on Element.</p>
 
 <p>
     <a
-    href="https://app.element.io/#/room/%(room_id_forurl)s?email=%(to_forurl)s&signurl=https%%3A%%2F%%2Fvector.im%%2F_matrix%%2Fidentity%%2Fapi%%2Fv1%%2Fsign-ed25519%%3Ftoken%%3D%(token)s%%26private_key%%3D%(ephemeral_private_key)s&room_name=%(room_name_forurl)s&room_avatar_url=%(room_avatar_url_forurl)s&inviter_name=%(sender_display_name_forurl)s&guest_access_token=%(guest_access_token_forurl)s&guest_user_id=%(guest_user_id_forurl)s">Join the conversation.</a>
+    href="%(web_client_location)s/#/room/%(room_id_forurl)s?email=%(to_forurl)s&signurl=https%%3A%%2F%%2Fvector.im%%2F_matrix%%2Fidentity%%2Fapi%%2Fv1%%2Fsign-ed25519%%3Ftoken%%3D%(token)s%%26private_key%%3D%(ephemeral_private_key)s&room_name=%(room_name_forurl)s&room_avatar_url=%(room_avatar_url_forurl)s&inviter_name=%(sender_display_name_forurl)s&guest_access_token=%(guest_access_token_forurl)s&guest_user_id=%(guest_user_id_forurl)s">Join the conversation.</a>
 </p>
 
 <p>Element is an open source collaboration app built on the Matrix.org

res/vector-im/invite_template.eml.j2

@@ -128,7 +128,7 @@ room {{ bracketed_room_name }} on Element.</p>
 
 <p>
     <a
-    href="https://app.element.io/#/room/{{ room_id|urlencode }}?email={{ to|urlencode }}&signurl=https%3A%2F%2Fvector.im%2F_matrix%2Fidentity%2Fapi%2Fv1%2Fsign-ed25519%3Ftoken%3D{{ token|urlencode }}%26private_key%3D{{ ephemeral_private_key|urlencode }}&room_name={{ room_name|urlencode }}&room_avatar_url={{ room_avatar_url|urlencode }}&inviter_name={{ sender_display_name|urlencode }}&guest_access_token={{ guest_access_token|urlencode }}&guest_user_id={{ guest_user_id|urlencode }}">Join the conversation.</a>
+    href="{{ web_client_location }}/#/room/{{ room_id|urlencode }}?email={{ to|urlencode }}&signurl=https%3A%2F%2Fvector.im%2F_matrix%2Fidentity%2Fapi%2Fv1%2Fsign-ed25519%3Ftoken%3D{{ token|urlencode }}%26private_key%3D{{ ephemeral_private_key|urlencode }}&room_name={{ room_name|urlencode }}&room_avatar_url={{ room_avatar_url|urlencode }}&inviter_name={{ sender_display_name|urlencode }}&guest_access_token={{ guest_access_token|urlencode }}&guest_user_id={{ guest_user_id|urlencode }}">Join the conversation.</a>
 </p>
 
 <p>Element is an open source collaboration app built on the Matrix.org