Update MainWindow.cpp

resolved popup prompt window of Updates again and again
Merge pull request #8 from vikramrajkumar/btsx

merge latest
Update MainWindow.cpp

Prevent  the pop-up window once every 20 minutes.
Initial work on new update manifest format
Merge pull request #9 from vipjeffreylee/patch-3

Update MainWindow.cpp
Merge pull request #45 from vipjeffreylee/patch-2

resolved popup prompt window of Updates again and again
Further work on the new web update system. It may or may not work now.
Minor fix in web updates loading.
Further refinements to web updates, particularly, the entire update
description is now included in the signature.
Revert "resolved popup prompt window of Updates again and again"
Merge pull request #49 from BitShares/revert-45-patch-2

Revert "resolved popup prompt window of Updates again and again"
Merge pull request #50 from BitShares/develop

Develop
Some i18n and Russian l10n
Mark a few Russian translations as finished
Don't use Russian by default... Oops. :)
Add a simple context menu to the tray icon with options to quit and
focus the application
Add the version data to the crash report file before the crash instead of after, to ensure we get it even if the crash screws tings up so much that the crash callback is never invoked
Merge branch 'master' into develop
Revert "Update MainWindow.cpp"

This reverts commit 56ecd297465c9f74f50ede25e3aac984b5653e79.
Revert "Update MainWindow.cpp"

This reverts commit 96b1d33350778f6ec970ba106f5d856f603f17e9.