Starting docs for the new i18n layer
Improvents in the i18n docs
Improving docs on plural rules
Improving the plurals section in the i18n docs
Adding the list of formatting specifiers for number, date and time
Documenting how to create your own translators and message parsers
Adding explanations for creating generic translators
Adding docs for alternate formatters
Adding a few lines about doing context and plurals in custom containers
Fix typos and grammar.
Grammar and spelling fixes.
More fixes and formatting
Merge pull request #1573 from cakephp/3.0-i18n

3.0 i18n