vendorize: update all vendorized packages. (#2206)

Bring in new changes from upstream for all the packages.

Important ones include
   - gorilla/mux
   - logrus
   - jwt

vendor/github.com/dustin/go-humanize/README.markdown

@@ -1,4 +1,4 @@
-# Humane Units
+# Humane Units [![Build Status](https://travis-ci.org/dustin/go-humanize.svg?branch=master)](https://travis-ci.org/dustin/go-humanize) [![GoDoc](https://godoc.org/github.com/dustin/go-humanize?status.svg)](https://godoc.org/github.com/dustin/go-humanize)
 
 Just a few functions for helping humanize times and sizes.
 
@@ -15,7 +15,9 @@ strings like, `83MB` or `79MiB` (whichever you prefer).
 
 Example:
 
-    fmt.Printf("That file is %s.", humanize.Bytes(82854982))
+```go
+fmt.Printf("That file is %s.", humanize.Bytes(82854982))
+```
 
 ## Times
 
@@ -24,7 +26,9 @@ For example, `12 seconds ago` or `3 days from now`.
 
 Example:
 
-    fmt.Printf("This was touched %s", humanize.Time(someTimeInstance))
+```go
+fmt.Printf("This was touched %s", humanize.Time(someTimeInstance))
+```
 
 Thanks to Kyle Lemons for the time implementation from an IRC
 conversation one day.  It's pretty neat.
@@ -43,7 +47,9 @@ to label ordinals.
 
 Example:
 
-    fmt.Printf("You're my %s best friend.", humanize.Ordinal(193))
+```go
+fmt.Printf("You're my %s best friend.", humanize.Ordinal(193))
+```
 
 ## Commas
 
@@ -57,16 +63,20 @@ Want to shove commas into numbers?  Be my guest.
 
 Example:
 
-    fmt.Printf("You owe $%s.\n", humanize.Comma(6582491))
+```go
+fmt.Printf("You owe $%s.\n", humanize.Comma(6582491))
+```
 
 ## Ftoa
 
 Nicer float64 formatter that removes trailing zeros.
 
-    fmt.Printf("%f", 2.24)                   // 2.240000
-    fmt.Printf("%s", humanize.Ftoa(2.24))    // 2.24
-    fmt.Printf("%f", 2.0)                    // 2.000000
-    fmt.Printf("%s", humanize.Ftoa(2.0))     // 2
+```go
+fmt.Printf("%f", 2.24)                   // 2.240000
+fmt.Printf("%s", humanize.Ftoa(2.24))    // 2.24
+fmt.Printf("%f", 2.0)                    // 2.000000
+fmt.Printf("%s", humanize.Ftoa(2.0))     // 2
+```
 
 ## SI notation
 
@@ -74,8 +84,9 @@ Format numbers with [SI notation][sinotation].
 
 Example:
 
-    humanize.SI(0.00000000223, "M")    // 2.23nM
-
+```go
+humanize.SI(0.00000000223, "M")    // 2.23nM
+```
 
 [odisc]: https://groups.google.com/d/topic/golang-nuts/l8NhI74jl-4/discussion
 [sinotation]: http://en.wikipedia.org/wiki/Metric_prefix