* #31377: functionnal actions

AndroidManifest.xml

res/drawable-hdpi/ic_call.png

res/drawable-hdpi/ic_hangup.png

res/drawable-mdpi/ic_call.png

res/drawable-mdpi/ic_hangup.png

res/drawable-xhdpi/ic_call.png

res/drawable-xhdpi/ic_hangup.png

res/layout/expandable_child.xml

res/layout/frag_call.xml

res/layout/frag_contact_list_header.xml

res/layout/frag_dialing.xml

res/layout/item_contact_starred.xml

res/menu/ac_call.xml

res/values-fr/strings.xml

res/values/strings.xml

src/org/sflphone/client/CallActivity.java

src/org/sflphone/client/SFLPhoneHomeActivity.java

src/org/sflphone/fragments/CallFragment.java

src/org/sflphone/fragments/ContactListFragment.java

src/org/sflphone/model/Bubble.java