Minor spelling fixes for arquillian

actived->activated
- I don't think the former is a word

arquillian validator->Arquillian Validator
- This kind of thing seems capitalised in most places:
Arquillian Eclipse
Arquillian Profiles
Generate Arquillian Deployment Method
etc
JBIDE-14876 - Added WS what's new for beta2
image to illustrate default get
JBIDE-14870 jst/jsf New and Noteworthy for 4.1.0.Beta2
BrowserSim/CordovaSim new and noteworthy for Beta2
JBIDE-14884: Forge New and Noteworthy for 4.1.0.Beta2
remove double contains
JBIDE-14882 : Project Examples N&N for 4.1.0.Beta2

Signed-off-by: Fred Bricon <fbricon@gmail.com>
JBIDE-14871 - N&N for LiveReload
[JBIDE-14879] Maven New and Noteworthy for 4.1.0.Beta2
[JBIDE-14869] Create New and Noteworthy for 4.1.0.Beta2

cleanup index.html after merge with project examples N&N
[JBIDE-14886] server New and Noteworthy for 4.1.0.Beta2