Fixes #1025: Implemented support for class-level events.
Typo [skip ci]
Merge pull request #1101 from lucianobaraglia/master

Typo [skip ci]
Added note about "Inconsistent types declared for an argument: U_ARGUMENT_TYPE_MISMATCH" ICU error to i18n docs
Added info about class-level event handlers to doc
fixed gridview message pattern
made intl messages more compatible with various ICU versions

issue #1072