fix extraAllowedContent option
when url is resolveuid, show actual URL in link dialog

first step
change actualUrl widget when url is changed

among others with file browser
Actual url widget should be inside urlOptions hbox
It should also work when pasting resolveuid
error handling
update changelog
fix travis
Preparing release 4.2.0
Back to development: 4.2.1
Add removePlugins option to control panel

to allow to deactivate plugins.
update documentation
Update to CKeditor 4.4.1.
Update jsregistry.xml

Explicitly stating the correct registry order (important for sites upgraded from previous versions with up4000)
Add removePlugins property to default profile
Add image2_alignClasses and image2_captionedClass

settings to setup image2 plugin.
add image2 plugin and its dependencies
document image2 plugin configuration
Preparing release 4.3.0b1
Back to development: 4.3.0b2