change the organization header look

- changed the way organization details appear
  in organization details and task details page.
- to do this, created a hdeaer_layout and including this
  in the needed layout files.
- also, customized the rating bar in these two pages.
Merge branch 'master' of https://github.com/App6/VolunteerBeat

Conflicts:
	res/values/styles.xml
	src/com/codepath/app6/volunteerbeat/activities/TaskDescriptionActivity.java