drafts: Add blue border around the active draft.
drafts: Add blue border around the active draft.

This removes the change in background to a darker one for active draft,
also removes the change in recipient_row_date color to blue; adds a blue
border around the draft box.

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