Changed wording for command line message.
Annotated hudson.model.User methods.

The fix also includes comments in #1424 regarding Nonnull usage

Signed-off-by: Oleg Nenashev <o.v.nenashev@gmail.com>
Updating javadoc after struggling to add action to nodes
Merge pull request #1416 from dominiquebrice/javadoc_update

Updating javadoc after struggling to add action to nodes
Merge pull request #1430 from garlandkr/master

Changed wording for command line message.
Merge pull request #1424 from synopsys-arc-oss/refactoring_User_class

Annotated hudson.model.User methods
[FIXED JENKINS-25019]

A truly conforming servlet 3.0 container does not allow us to set "secure cookie" flag beyond ServletContextListener.onInitialized().
If we see that, don't scare the users.