fix InitCommand() (#285)

split modules/config

login_tasks.go should probably be modules/task/login.go,
but i didn't do that, as it still depends on the global
`Config` variable from the config module, see
https://gitea.com/gitea/tea/issues/158

rework InitCommand()

- make it error tolerant if $PWD is not a git repo (#200)
- don't force default login when repo flag is set (#191)

remove InitCommandLoginOnly()

Merge branch 'master' into issue-200-initcommand

improve docs

Merge branch 'master' into issue-200-initcommand

move config func and config task func to right place

Co-authored-by: Norwin Roosen <git@nroo.de>
Co-authored-by: 6543 <6543@obermui.de>
Reviewed-on: https://gitea.com/gitea/tea/pulls/285
Reviewed-by: 6543 <6543@obermui.de>
Reviewed-by: khmarbaise <khmarbaise@noreply.gitea.io>
Co-Authored-By: Norwin <noerw@noreply.gitea.io>
Co-Committed-By: Norwin <noerw@noreply.gitea.io>

cmd/notifications.go

@@ -47,6 +47,8 @@ func runNotifications(ctx *cli.Context) error {
 	var news []*gitea.NotificationThread
 	var err error
 
+	login, owner, repo := config.InitCommand(flags.GlobalRepoValue, flags.GlobalLoginValue, flags.GlobalRemoteValue)
+
 	listOpts := flags.GetListOptions(ctx)
 	if listOpts.Page == 0 {
 		listOpts.Page = 1
@@ -61,13 +63,11 @@ func runNotifications(ctx *cli.Context) error {
 	}
 
 	if ctx.Bool("all") {
-		login := config.InitCommandLoginOnly(flags.GlobalLoginValue)
 		news, _, err = login.Client().ListNotifications(gitea.ListNotificationOptions{
 			ListOptions: listOpts,
 			Status:      status,
 		})
 	} else {
-		login, owner, repo := config.InitCommand(flags.GlobalRepoValue, flags.GlobalLoginValue, flags.GlobalRemoteValue)
 		news, _, err = login.Client().ListRepoNotifications(owner, repo, gitea.ListNotificationOptions{
 			ListOptions: listOpts,
 			Status:      status,