Create Add Transaction Activity

- Set up basic wire from the Liquid Assets view
- Create a basic xml view
Add simple DatePickerFragment
Add a ExpandableListView to show current expenses of the user
Merge remote-tracking branch 'origin/master' into liquid-assets-screen
Merge pull request #40 from CodePath-MAF/goal-view

Goal view - Added goal payments adapter
Changes after merge
Merge remote-tracking branch 'origin/master' into liquid-assets-screen
Implement Add transactions.

- Load up spinner category from parse.
- Save transaction into parse.
- send a response back to the parent fragment.
Merge branch 'master' into add-transaction

Conflicts:
	res/values/strings.xml
	src/org/missionassetfund/apps/android/models/Transaction.java
Merge pull request #41 from CodePath-MAF/goal-view

missed these classes last commit
Merge remote-tracking branch 'origin/master' into liquid-assets-screen
Fix: remove unused code
Merge pull request #42 from CodePath-MAF/add-transaction

Add transaction
Merge remote-tracking branch 'origin/add-transaction' into liquid-assets-screen

Conflicts:
	src/org/missionassetfund/apps/android/fragments/LiquidAssetsFragment.java
	src/org/missionassetfund/apps/android/models/Transaction.java
Merge remote-tracking branch 'origin/master' into liquid-assets-screen

Conflicts:
	src/org/missionassetfund/apps/android/models/Transaction.java
Small refactoring
Changes after review
Merge pull request #44 from CodePath-MAF/liquid-assets-screen

Liquid assets screen
I think I am done with goal and payments except flow from dashboard and styling