settings: add "tasks" button (advanced)

added a GET /tasks route to list tasks with a description (untranslated,
but this is mostly a dev feature anyway). Loaded in a modal by enabling
advanced settings and pressing the Tasks button at the top (where logs,
backups, restart are). Also added some icons in settings, and removed
some redundant "flex flex-row"s on buttons and reduced the spacing in
those with icons to gap-1.

tasks.go

@@ -7,6 +7,35 @@ import (
 	"github.com/gin-gonic/gin"
 )
 
+// @Summary List existing task routes, with friendly names and descriptions.
+// @Produce json
+// @Success 200 {object} TasksDTO
+// @Router /tasks [get]
+// @Security Bearer
+// @tags Tasks
+func (app *appContext) TaskList(gc *gin.Context) {
+	resp := TasksDTO{Tasks: []TaskDTO{
+		TaskDTO{
+			URL:         "/tasks/housekeeping",
+			Name:        "Housekeeping",
+			Description: "General housekeeping tasks: Clearing expired invites & activities, unused contact details & captchas, etc.",
+		},
+		TaskDTO{
+			URL:         "/tasks/users",
+			Name:        "Users",
+			Description: "Checks for (pending) account expiries and performs the appropriate actions.",
+		},
+	}}
+	if app.config.Section("jellyseerr").Key("enabled").MustBool(false) {
+		resp.Tasks = append(resp.Tasks, TaskDTO{
+			URL:         "/tasks/jellyseerr",
+			Name:        "Jellyseerr user import",
+			Description: "Imports existing users into jellyfin and synchronizes contact details. Should only need to be run once when the feature is enabled, which is done automatically.",
+		})
+	}
+	gc.JSON(200, resp)
+}
+
 // @Summary Triggers general housekeeping tasks: Clearing expired invites, activities, unused contact details, captchas, etc.
 // @Success 204
 // @Router /tasks/housekeeping [post]