Switched from home grown image tool to Picasso

Moved from the home-grown image downloading and caching code to
Square's Picasso library (issue #56). Now we have the advantage of
stuff like memory caching and lots of little extras if we should need
them.

We still may want to set up some method to prune our image cache when
the user logs out.
changed singleInstance to singleTask
Merge pull request #67 from cyrieu/working

changed singleInstance to singleTask
Added a Nav Drawer Interface
Added the ability to get the Most popular anime off of MAL
Able to fetch top rated and most popular anime (no manga)
Added SherlockNavDrawer Submodule
Add Link to MAL Details Page

Add a link in the menu to take the user to the MAL page for the title
they are viewing. This closes #68.
Add author
Merge branch 'working' of https://github.com/AnimaSA/Atarashii into working
Added highlighting to nav drawer items
Add Placeholder and Error Images

Make some simple placeholder and error image files for Picasso to use.
This prevents a previous cover from "flashing" when scrolling down. It
also makes for a nice placeholder as the application downloads the
images.

Additionally, include the source files that created the placeholder.
Disable listType menu item when looking at most popular and top rated because there's no 'completed' or 'in progress' status for them
Endless Scrolling for 'Top Rated' and 'Most Popular' Sections
Merge pull request #69 from cyrieu/working

NavDrawer + Most Popular and Top Rated Anime lists
Cleanup gitmodules

Was an excess misspelled one. Removed it.
Auto-sync & bug fix

Added auto-sync to Atarashii
fixed some bugs at the first time login screen.
(i am still editing and submitting strings & settings)
get pref...
Add auto-sync to settings menu & cleanup
add auto-sync strings & cleanup