Fixed NullpointerException in AddFeedActivity
Updated translations, added Czech, Azerbaijani, Portuguese
Added transifex project configuration
Prepared release of version 0.9.7.4
Merge branch 'eNBeWe-master' into develop
Fixed build config files

Added support for proguard in maven build process, fixed signing issues with maven
Ignore IntelliJ project files
Added support for Links in MP3 chapters (using WXXX frame)
Added support for ID3 2.4 tag, resolved problems with frame size calculation
Use http instead of https for accessing the miroguide. Fixes #206
Removed http-IntentFilters from OpmlImportActivity

Selecting a link has sometimes opened the OPML import of AntennaPod, even though the selected link was not an OPML file.
Updated changelog
Added transifex configuration for changelog and description
Merge branch 'develop'
Promote DownloadError to enum for type-safety
Flush BufferedOutputStream correctly

This ensures that IOException due to writes are thrown in the main
code path instead of the exceptional code path.  Specifically for
HttpDownloader this ensures that IOUtils.closeQuietly does not swallow
a failed write.
Set 'reason' attribute when download was successful.
Updated .gitignore
Merge branch 'buffered-output-stream-flush' of git://github.com/andrewgaul/AntennaPod into andrewgaul-buffered-output-stream-flush

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