Update changelog.md
Update changelog.md
Fix validationSubmit directive to avoid non interpretation of others angular treatments
Fix rule required #28
Merge pull request #32 from ctjhoa-linagora/master

Fix validationSubmit directive
Fixed customizable initial validation.
Grunt build.
Merge pull request #34 from a-henning/fix_init_valid

Fixed customizable initial validation.
Fix scope initialValidity error
Update readme file and add Q&A API page