Work without access to ~/Books

The app store doesn't want to allow any file system access outside those
directories permitted by default.  So now we store books deep in
~/.local.  It's for your own good, really.
Add button on opening screen to switch to downloader
Move details about downloads to expandable widget

Also, remove the welcome dialog, since there's no chance of finding
books in the new place on the first load, so there's no freeze we need
to hide.
Undo setting organization and applications names

This is now fixed in the SDK.
Set application name to be full reverse domain name

Because it would be too easy to just have it read from the manifest
file....
Update click packaging to set architecture
Remove Nemo Mobile FolderListModel

It's no longer in the Ubuntu Touch image.  (Yeah for not having a way to
note dependencies!)  We could use Qt.labs.folderlistmodel, but this
behaves somewhat differently and doesn't have a good way to tell when
it's ready for you to read the list of files.  So we've just rolled our
own solution in C++.

While we're removing stuff, we also got rid of the firstStart dialog,
which is no longer being used.
Suggestions for makeclick.sh from Robert Park
Regenerate cover if we manage to open a book previously causing errors

Closes #26.
Update README
Make shell script work when run as symlink
Refactor FileReader to FileSystem

Remove the read functions that aren't being used anymore, and rename
to reflect use for filesystem access.
Refactor II: The Renaming
Make default location for books into a setting

We chose the location in part based on whether we can write to the user's
home directory.  This should allow us to use the same code for restricted
and unrestricted operation.
Merge branch 'restricted'

Conflicts:
	filereader/filereader.cpp
	manifest.json.in
	ui/LocalBooks.qml
Build versions with and without file access restrictions

Also, produce .tar.gz versions of the click packages, for later
inspection and for running Beru without building or installing.
Add note about changing default book location
Update to new OptionSelectorDelegate

We have to ship the new OptionSelector, due to Launchpad bug #1237045.
Add keyboard control for page turns
Fix undefined variables in styling defaults