Forward porting of changes in 1.9.3.x to 1.9.4.x

[Flyingmana]

Some changes/Pull Requests were merged into 1.9.3.x

please verify no PullRequests are still targeting this branch(or list the ones, which do), and list the changes of 1.9.3.x which are missing in 1.9.4.x

[Sekiphp]

• d283552
• Couponcode adminhtml updated pull #447
• fixed return value of saveCache method #583
• Fix HTTP/2 errors with cURL post #589
• 1.9.3.x => E-Mail templates only: replace plaintext password with hint of choosen password #1022
• Update shipping.phtml (rwd theme) #575

[Flyingmana]

So after mergin the one PR now only these are left missing?

• Fix HTTP/2 errors with cURL post #589
• 1.9.3.x => E-Mail templates only: replace plaintext password with hint of choosen password #1022

or were they covered by another PR?

[elidrissidev]

@Flyingmana I just did a comparison between 1.9.4.x and 1.9.3.x and the changes that show up are all present in 1.9.4.x