[wait for upstream] [jsk_fetch_startup] add basic authentication in roswww on fetch

[knorth55]

wait for upstream
depend on tork-a/roswww#51

add basic authentication for all roswww pages

cc. @708yamaguchi

[708yamaguchi]

I accessed this page with chrome, but at first topic list was not displayed.
It behaves correctly after two reloads. (I don't know the reason, but 2 reload seems important)

I tested this page with two computer.

1. Chrome browser on Ubuntu 18.04.
   When I use normal window, this only happens once.
   When I create new incognito window, this happens repeatedly.

2. Chrome browser on iPhone X.
   Topic list is never displayed. From what I remember, it was displayed at the previous version.

[knorth55]

@708yamaguchi I confirmed the issue, but I can get proper page at once when I connect to pr1040.
I checked with web developer and some css are failed to be downloaded.
maybe something got timeout.

[708yamaguchi]

Thank you for thoughts. I agree with you.
It seems that not only css files but also ROSLIB or jQuery are sometimes not loaded.

The error says,

 Failed to load resource: net::ERR_CONTENT_LENGTH_MISMATCH roslib.js:1

This may be cache problem (?)
https://cpoint-lab.co.jp/article/201809/5517/

[k-okada]

do we need to add tork-a/roswww
https://github.com/jsk-ros-pkg/jsk_robot/blob/master/jsk_fetch_robot/jsk_fetch.rosinstall ?

[knorth55]

yes we need tork-a/roswww#51.
@k-okada do you have a plan to merge tork-a/roswww#51 ?