add links validation
Merge pull request #1 from OmniaGM/master

add links validation
Merge branch 'master' of github.com:daviferreira/medium-editor
convert html tags to string
Merge branch 'master' of github.com:SalamWorld/medium-editor
Merge pull request #2 from OmniaGM/master

add htmlEntities method
merge with daviferreira/medium-editor
Merge pull request #3 from OmniaGM/sw-master

merge with daviferreira/medium-editor
merge fix paste behavior in firefox
Merge pull request #5 from OmniaGM/sw-master

merge fix paste behavior in firefox
merge
Merge pull request #6 from OmniaGM/sw-master

merge with upstream master and fix bug
Merge pull request #9 from OmniaGM/fix-unlink

Fix unlink
Merge pull request #12 from OmniaGM/strong-link-validation

Strong link validation
show error status when user adds empty link
Merge pull request #13 from OmniaGM/strong-link-validation

Strong link validation
show error status when user adds empty link