Removed FLAPPY_SPECIFIC_FAILURE by folding into OTHER_1_STAR_FAIL.
Merge branch 'master' of github.com:code-dot-org/blockly into feedback

Conflicts:
	src/flappy/levels.js
Moved message from common to flappy.
Moved translations from common/<LANG>.json to flappy/<LANG>.json.
Revert "Moved translations from common/<LANG>.json to flappy/<LANG>.json."

This reverts commit aa6b927b1148cff9c68e65f6ab17196d91f57fb5.
Added 2-star messages to isFeedbackMessageCustomized().
Merge pull request #631 from espertus/feedback

Feedback
Fixed lint error of mine.
Merge pull request #643 from espertus/feedback

Fixed lint error of mine.
[finishes #72135312]: add two more k1 levels
Merge pull request #644 from code-dot-org/studio_last_k1_levels

[finishes #72135312]: add two more k1 levels
Fixed test failure due to my bad merge.
Merge pull request #645 from espertus/feedback

Fixed test failure due to my bad merge.
show Assemble Blocks Here: message even if we don't show block counts
Merge pull request #646 from code-dot-org/header_text_tweak

show Assemble Blocks Here: message even if we don't show block counts
[finishes #70375260] changeScore block
Merge pull request #647 from code-dot-org/studio_changeScore

[finishes #70375260] changeScore block
show last frame in victory dance
Merge pull request #648 from code-dot-org/lastFrame

show last frame in victory dance
[finishes #70373766]: support sprites of arbitrary size