Handle RTL in menubar

Handle RTL for cards

[Develop] Update Give Feedback link

Don’t intialize cards position in reducer - position needs to be set based on isRtl.

Rename prev/next icons to right/left arrows

Make `NextPrevButtons` function RTL aware so that it puts the prev/next on the left or right based on the direction of the language.

Note: the coming soon tooltip positions are calculated by react-tooltip, and they do not handle RTL.

padding and margin changes for www project page, monitor positioning

Update scratch-vm to the latest version 

Update scratch-blocks to the latest version 

* Delete confirmation i18n

* Update so that it works

Fix tooltips for preview modal

Fixes #2087 Thanks @apple502j 

[Develop] Release for August 10

Release August 10 to Beta

chore(package): update scratch-paint to version 0.2.0-prerelease.2018…

Closes #2854

fix for issue #2716 (brokenness in nav bar in にほんご language)

Remove duplicate dependency

Update scratch-render to the latest version 

padding and margin changes to make www project page layout work without hacks; hack to position monitors correctly

Disable sprite restoration.

chore(package): update scratch-blocks to version 0.1.0-prerelease.153…

Closes #2840

Update scratch-l10n to the latest version 

Fix file upload regression

Positioning custom-procedure blocks in RTL
Fixes #2810 

* Don't show intro modal if hideIntro passed to PreviewModal

* Add hideIntro prop to GUI

* Move intro modal hiding logic into its own function

Restore deleted sprite.