Set the role of Navbar to "navigation" instead of "banner"

See http://getbootstrap.com/components/#navbar
Use <wicket:container> instead of <wicket:panel> for the markup of a component that should render its body only

<wicket:panel> works but it is confusing
Remove CSS class 'navbar-ex1-collapse' - there is no such CSS class in any .css file

Looks like a CSS class for examples
remove CSS class 'bs-navbar-collapse'.

There is no such CSS class in any .css file.
Add a TODO for review by miha
Make it possible to remove the class="container" around the Navbar's contents

This way the Navbar can take the whole screen width
Configure the brandLabel and brandImage components before deciding whether the brandLink should be visible or not.

Since it switches its visibility before render it should have #setOutputMarkupPlaceholderTag(true) to be able to become visible after being invisible.
Use #onConfigure() to set the visibility of the brand's label and image

It is cheaper than using #isVisible()
Issue #438 - Add a RepeatingView for extra items in the navigation bar which should not be in the <ul>s
Update Bootswatch themes. Add Paper and Sandstone themes
 Issue #439 - Remove the new container flag and use the old 'fluid'. It seems it has been broken since a while
Fix broken test - NavbarTest
Use https://github.com/twbs/bootlint to improve the usage of Bootstrap in the components and samples
Move bootlint to -core module so it can be used by application developers too
Use OpenJDK 6 for building at Travis
Make it possible to build with JDK 6
Fix the problems on the home page:

- Use just IE=edge as content
- use http-equiv instead of name
cat the contents of surefire report for a failing test
Cat the surefire XML report too
Update README (test the build)