Review Board Mobile: Review Request Page Box
Made the review page (/r/:id) responsive, so it can be used on a mobile device

without hassle.
Changes:

Viewport zoom is disabled, so that mobile devices will not automatically

   try to adjust the rendering to fit everything into the page. This makes

   the text much easier to read and at its natural size.
Action bar (close, update, review, etc.) responds naturally to size, and

   collapses naturally into a pulldown menu bar when there is not enough

   horizontally. Since the number of elements here depends on the state of

   the user/review (e.g. logged in, etc.) and the width of the element is

   unknown prior to rendering, this change is taken care of by javascript.

   It also listens to the resize event, so when orientation is changed on

   the phone, it adapts accordingly.
The Information box that is usually on the right handside of the review

   detail box responds to screensize using css media queries. If there is

   not enough space, the box collapses into a toggler which can be used to

   open or close the box. This also saves space for limited screen size on

   mobile
Writing reviews and comments is more natural to the mobile interface, as

   the box fits nicely in the screen and the text size is natural. CSS

   media queries have been used to adjust the size and the modal responds

   to the screen size accordingly.
The diff viewer does not extrude from the review box and create empty

   white space in the webpage, and fixes the scrolling of the page so the

   user does not go off page. This is done by making the inside content

   scrollable sideways. This user interaction is more natural, because it

   does not get in the way of the user when the user is navigatint the page

   but if necessary the user can scroll to view the diffs.
Margins and paddings have been reduced on mobile due to the fact that

   often times the screen size is very limited, and we want to maximise the

   available screen space.

This change generally reflects the user interface standards expected on mobile,

which is to collapse unnecessary content and let content be accessible but not

get in the way of the user.
The changes for the diff viewer can be seen from a video that can be accessed

on the dropbox link below:
https://www.dropbox.com/sh/lryf3dw5ptooss2/UKG6k5xz6G

Tested on:

- iPhone 5S (real hardware)

- desktop browser, changing the screen width

- chrome device emulator (which can emulate different mobile devices)