this resolves #130, resolves #188, resolves #196, resolves #210

- #130: Save button is now enable only after the recording is finished

- #188
1. new images are created with colors adapted.
2. new drawables are created to change the style of seekbar, actionbar and play/stop button in thumb-respeaking activities
3. new style is declared in no_icon_action_bar.xml.

- #196
1. AddSpeakerActivity is now divided into 3 activities(AddSpeakerActivity1-3)
2. Corresponding layout is also divided into 3 layouts

- #210: 
1. LanguagesArrayAdapter class is created to support all language-related activities.
(RecordLanguagesArrayAdapter, SpeakerLanguagesArrayAdapter is not deleted yet)
2. setAdapter() in language-related activities is called only once when the activities are created.