* Selecting apps to swap fixed
Before the checking of a list item would not actually register it to
be included in the swap. This has been rectified.
* Added a new property to repos for "isSwap"
Repositories with this property are not shown in the Manage Repos
activity, as there is not much benefit to having this happen.
* More robust error handling when symlinking files
Before it would check for stdout or stderr and then throw an exception.
This happened even on successful symlinks on my 2.3.3 device. As such,
I've put the error checking after the shell command has completely finished
(just in case there were any race conditions), and more importantly, checked
for the presence of the file being linked - rather than just stdout or
stderr.
* More code cleanup
Generics <> operator, Nullable annotations, removal of dead code.
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