Allow shinymanager login configuration

[jthompson-arcus]

The shinymanager login screen is very GCP centric from authenticate_ui(). It should allow individual orgs to supply their own logo and administrator email for their deployment.

clinsight/R/app_authentication.R

Lines 72 to 93 in 684af10

	authenticate_ui <- function(){
	shinymanager::secure_app(
	app_ui,
	enable_admin = TRUE,
	theme = bslib::bs_theme(bootswatch = "spacelab", version = "5"),
	tags_top = tags$div(
	golem_add_external_resources(),
	tags$img(src='www/gcp_logo.png', height = '100', width ='450'),
	HTML("<br><br>")
	),
	tags_bottom = tags$div(
	tags$p(
	"For any question, please contact the ",
	tags$a(
	href = "mailto:[email protected]?Subject=ClinSight",
	target="_top", "administrator"
	)
	)
	),
	background = "background-color: #454545;"
	)
	}

[LDSamson]

PR #82 made the login screen more general and not GCPS-centered (see here).

Still, it would indeed be nice to be able to configure the logo + e-mail address by the end user.