[DLNA] Add sort options for MediaServer example

This patch adds sorting options to mediaserver.html
[Speech] Add IVI Speech API support

Adding the synthesizer/vocalizer part for now.
Will add the recognition later.
[Tizen] Fix for File.length and File.fileSize properties

File.length should be undefined for files and defined for directories,
while fileSize should be only available for regular files.
Merge pull request #273 from mrunalk/speech_api

[Speech] Add IVI Speech API support
Bump version to 0.47
[Download] enable build for all tizen platforms

replace '_mobile' suffix by '_tizen' in order to
also support IVI platform.

BUG=XWALK-1070
Merge pull request #288 from eurogiciel-oss/download_XWALK-1070

[Download] enable build for all tizen platforms
Bump version to 0.48
[Application] Add application context, kill, launch and app info events support

The supported APIs are listed below:
Application,
ApplicationContext,
ApplicationManager.getCurrentApplication,
ApplicationManager.getAppContext/getAppsContext,
ApplicationManager.kill/launch,
ApplicationManager.addAppInfoEventListener/removeAppInfoEventListener

As we runs extension process logic on launcher now, the AUL related APIs can be
directly called in this extension.
The C++ Application class will represent current running application and owned
by ApplicationExtension. The ApplicationManager class will provide methods to
manipulate other applications and listening to app info events.
Merge pull request #286 from seanlong/app_dev

[Application] Add application context, kill, launch and events support
[Tizen] Content API - Part 3

Added support for Tizen filters (AttributeFilter only). The rest (Range and Composite) are coming later.

Added also support for media type specific attributes for audio, video and image types.

Changed some types to more convenient ones f.ex timestamp to string.

Added filtering features to examples/content.html test page.
Merge pull request #287 from alexshalamov/fix_file_attributes

[Tizen] Fix for File.length and File.fileSize properties
Merge pull request #278 from poussa/content-3

[Tizen] Content API - Part 3
Bump version to 0.49
[Application] Add current application exit/hide support

The supported APIs are listed below:
Application.hide/exit

The implementation leverages running application object exported by the runtime
process on the DBus session. The "Terminate" and "Exit" methods of it only
permit the launcher process to access.

Supplement Application example for new added APIs are also added.
Merge pull request #289 from seanlong/app_dev

[Application] Add current app exit/hide support
Bump version to 0.50
[Tizen] Don't throw exception when empty files are read

This patch removes check that throws exception when empty file is read.
Merge pull request #293 from alexshalamov/fix_read_empty_file

[Tizen] Don't throw exception when empty files are read
Bump version to 0.51