Revert "added git submodule android-pulltorefresh"

This reverts commit 01ce55e01ec91fde1af2921411a13066bb03be75.
Revert "modified RoutesAsyncListView to use alternate pull to refresh code from https://github.com/johannilsson/android-pulltorefresh and fix the stack overflow errors on certain android devices"

This reverts commit f580fb9e4db6a56975dc2aabc8793e285cbd05c2.
* use fixes for ActionBar-PullToRefresh
* simple sublcass of ScrollView that allows the pull-to-refresh
  handling to trigger even when the content is too short to need scrolling.
* use pull-to-refresh for emergency module.
* use special ScrollView subclass for refreshable content in dining.
* actually use the constant, meant to define the minimum the user has to scroll
  before we start to override the ScrollViews natural behavior.