* #25270 Overall improvements of transitions between calls and call actions

res/drawable/icon_separate.png

res/layout/activity_call_layout.xml

res/layout/expandable_child.xml

...fairelinux/sflphone/adapters/AccountSelectionAdapter.java

src/com/savoirfairelinux/sflphone/client/CallActivity.java

...avoirfairelinux/sflphone/client/SFLPhoneHomeActivity.java

...com/savoirfairelinux/sflphone/fragments/CallFragment.java

...savoirfairelinux/sflphone/fragments/CallListFragment.java

...oirfairelinux/sflphone/fragments/ConferenceDFragment.java

...com/savoirfairelinux/sflphone/fragments/HomeFragment.java

...avoirfairelinux/sflphone/fragments/TransferDFragment.java

...m/savoirfairelinux/sflphone/interfaces/CallInterface.java

...com/savoirfairelinux/sflphone/loaders/AccountsLoader.java

src/com/savoirfairelinux/sflphone/model/Bubble.java

src/com/savoirfairelinux/sflphone/model/BubbleModel.java

src/com/savoirfairelinux/sflphone/model/BubblesView.java

src/com/savoirfairelinux/sflphone/model/CallContact.java

src/com/savoirfairelinux/sflphone/model/Conference.aidl

src/com/savoirfairelinux/sflphone/model/Conference.java

src/com/savoirfairelinux/sflphone/model/SipCall.java