custom fields: Set generic click handler on remove_date buttons.
custom fields: Set generic click handler on remove_date buttons.

This commit adds click handler on date type custom profile
fields on field initialization itself.
This commit also fixes the bug in date type fields in user
profile in org settings.

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