account settings: Add user_details_section to template.
account settings: Add user_details_section to template.

Added a div(user_details_section) to group all the similar user
settings together into the div. Unindented to make the changes
easily visible.

synicalsyntax/zulip,timabbott/zulip,andersk/zulip,brainwane/zulip,shubhamdhama/zulip,synicalsyntax/zulip,hackerkid/zulip,synicalsyntax/zulip,zulip/zulip,brainwane/zulip,brainwane/zulip,synicalsyntax/zulip,kou/zulip,zulip/zulip,showell/zulip,synicalsyntax/zulip,punchagan/zulip,punchagan/zulip,eeshangarg/zulip,showell/zulip,timabbott/zulip,timabbott/zulip,andersk/zulip,kou/zulip,punchagan/zulip,hackerkid/zulip,shubhamdhama/zulip,punchagan/zulip,andersk/zulip,synicalsyntax/zulip,hackerkid/zulip,zulip/zulip,shubhamdhama/zulip,punchagan/zulip,synicalsyntax/zulip,eeshangarg/zulip,andersk/zulip,andersk/zulip,rht/zulip,shubhamdhama/zulip,shubhamdhama/zulip,zulip/zulip,eeshangarg/zulip,showell/zulip,punchagan/zulip,shubhamdhama/zulip,shubhamdhama/zulip,punchagan/zulip,timabbott/zulip,zulip/zulip,showell/zulip,kou/zulip,brainwane/zulip,rht/zulip,timabbott/zulip,showell/zulip,brainwane/zulip,rht/zulip,hackerkid/zulip,kou/zulip,kou/zulip,rht/zulip,hackerkid/zulip,rht/zulip,zulip/zulip,showell/zulip,kou/zulip,brainwane/zulip,showell/zulip,eeshangarg/zulip,eeshangarg/zulip,brainwane/zulip,timabbott/zulip,eeshangarg/zulip,rht/zulip,andersk/zulip,hackerkid/zulip,timabbott/zulip,hackerkid/zulip,zulip/zulip,andersk/zulip,rht/zulip,kou/zulip,eeshangarg/zulip