D11142: Add ConnectionCheck for Dash Cards

[Aditya Mehra]

Aiix created this revision.
Aiix added a reviewer: Plasma.
Restricted Application added a project: Plasma.
Restricted Application added a subscriber: plasma-devel.
Aiix requested review of this revision.

REVISION SUMMARY
  Check if there is an internet connection available before displaying information cards
  
  - Ping example.com to check connection availability
  - Wait for active internet connection to connect to plasma geolocation datasource
  - Do not display information cards in not connected as they are dependent on GeoLocation data

REPOSITORY
  R846 Mycroft Plasma integration

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D11142

AFFECTED FILES
  CMakeLists.txt
  plasmoid/contents/ui/main.qml
  plugin/CMakeLists.txt
  plugin/connectioncheck.cpp
  plugin/connectioncheck.h
  plugin/mycroftplasmoidplugin.cpp

To: Aiix, #plasma
Cc: plasma-devel, ZrenBot, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, mart
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