Remove require rubygems from source code.

Removed from anything that is wrapped by gem when installed by gem.
Fixes #338.
Symlink extjs-build & touch-build dirs in dev-mode.

Just to speed up creating these builds.
Add "Open in new window" button to ExtJS examples.

Simply copy over the toolbar code from Touch example component
and generalize the handler for the button.
Align "Open in new window" button to right.

Looks better IMHO.

In the case of Touch examples, the separator is no more needed
in this case.
Merge branch 'master' into doc-tags