Update Vendors: (#129)

* github.com/araddon/dateparse upgrade => v0.0.0-20200409225146-d820a6159ab1
* code.gitea.io/sdk/gitea upgrade => v0.11.3
* github.com/olekukonko/tablewriter upgrade => v0.0.4
* github.com/mattn/go-runewidth upgrade => v0.0.9
* github.com/stretchr/testify upgrade => v1.5.1
* github.com/davecgh/go-spew upgrade => v1.1.1
* github.com/urfave/cli/v2 upgrade => v2.2.0

Co-authored-by: 6543 <6543@obermui.de>
Reviewed-on: https://gitea.com/gitea/tea/pulls/129
Reviewed-by: techknowlogick <techknowlogick@gitea.io>
Reviewed-by: Lunny Xiao <xiaolunwen@gmail.com>

vendor/github.com/urfave/cli/v2/command.go

@@ -41,8 +41,11 @@ type Command struct {
 	Flags []Flag
 	// Treat all flags as normal arguments if true
 	SkipFlagParsing bool
-	// Boolean to hide built-in help command
+	// Boolean to hide built-in help command and help flag
 	HideHelp bool
+	// Boolean to hide built-in help command but keep help flag
+	// Ignored if HideHelp is true.
+	HideHelpCommand bool
 	// Boolean to hide this command from help or completion
 	Hidden bool
 	// Boolean to enable short-option handling so user can combine several
@@ -236,6 +239,7 @@ func (c *Command) startApp(ctx *Context) error {
 	app.Commands = c.Subcommands
 	app.Flags = c.Flags
 	app.HideHelp = c.HideHelp
+	app.HideHelpCommand = c.HideHelpCommand
 
 	app.Version = ctx.App.Version
 	app.HideVersion = ctx.App.HideVersion