Fixed wrong IDs in LocatingMethodFragment layout
Added method that gets the users country and city by GPS

Also added a onClick handler for the button that represents the users
choice to reveal his location by GPS. The handler calls the method that
finds the country and city and then gives both pieces information to the
LocationConfirmationFragment.
Added necessary permissions to the manifest
Updated the support library
Optimized spinner performance and added institution spinner refresh

Update to the spinner performance. The adapters are no longer created
every time, instead on data change they notify the view that the
underlying data has changed.
Also added a way to update the institution spinner after the user
selects a new city. This method isn't that good, but it's the first one
that works out of a bunch others better that didn't.
Removed obsolete button from the layout
Added skeleton mail activity
Added navigation drawer icons
Created classes to represent navigation menu items

The menu is going to be represented by an expendable list. Two classes
were created, one for the groups, or parents and the other for the
children.
Added a navigation menu selector

The selector changes the navigation menu items background depending on
it's state(pressed or normal).
Added an XML to give the counters that will be used on the navigation menu rounded corners
Added the color.xml for storing the necessary colors
Added the layouts for the parent and children navigation items
Updated dimens and strings XMLs with the required values
Added the layout for the MainActivity
Created the NavigationMenuAdapter

Created the adapter to handle the navigation menu items in the
expandable list.
Updated the minimum required SDK in the manifest
Connected the IntroActivity with MainActivity
Added some basic navigation items to the drawer
Now IntroActivity finishes after starting MainActivity

Finish IntroActivity  after starting MainActivity to prevent the user
from navigating back to the activity.