activate fixes to the Type Text action

Looks like they were fixed by 558fd80077e1f99991d66587cea13230c3f22ae8 but the new code was never used.
remove the unused System Events AppleScript
work around a bug where it truncates after 20 characters

Seems to be in CGEventKeyboardSetUnicodeString()
Merge pull request #1536 from skurfer/typeText

fix Type text