Dont set height on image as inline-style because it destroys ratio in responsiveness
LoginImage and WelcomeImage dimension -> width 300 BESTFIT, display block for welcomeImg because of space on img when display inline
changed private function from basicLinkTagIntern to protected for using in child classes
if web supports domains check for preview in backend if domains supports https and redirects to correct urls

is necessary because preview is in iframe and http/https mixings are rejected by browser
kwcPreview urlparam in getPreviewUrl can be ignored with previewMode param
Revert "kwcPreview urlparam in getPreviewUrl can be ignored with previewMode param"

This reverts commit 9015deaf49483c78f01c9be051eda61ea8d87adb.
Revert "if web supports domains check for preview in backend if domains supports https and redirects to correct urls"

This reverts commit 3dac8b481fd9841f6572061eff574d2e38ebac46.
get correct frontend urls for preview if https is supported
moved inline-style from welcome tpl to welcome css
Backport responsive image completed loading handling

only set inline height if img is not yet loaded

reverts 1c1c208356dc83d93901eddbea538d8bd4858a32
Include docType and header in Mail

- including Unit-tests
trl
trl
Merge pull request #176 from Ben-Ho/3.6-newsletter-statistic-improvements

newsletter statistic improvements
Merge pull request #175 from darimpulso/mailHeader-3.6

Include docType and header in Mail
text changes
fixed typing mistake
Add missing semicolon
Txt template for mail added
fix typo on component name (ooops)