#1131 Save Effect Stack in stack header

Fixes #1131 (closed)

• Save Effect Stack icon is moved to effects stack header
  • There is no simple way to hide/show that, so when no effects are in stack it is just disabled
• hamburger menu with save effect is removed, instead is Save Effect icon
• When effect (or stack) is saved without provided name, it is just closing silently without any saving - I added sorry message for such cases
• also, small typo wheen is fixed.