try to fix travis and appveyor

.travis.yml

@@ -1,7 +1,7 @@
 language: cpp
-osx_image: xcode7.3
+osx_image: xcode9.4
 sudo: required
-dist: trusty
+dist: xenial
 os:
 - linux
 - osx

resources/binaries

@@ -1 +1 @@
-Subproject commit e720ebcd6f9c146c3582e975fb24b5d93315b9bc
+Subproject commit 6bd7ec93a76a14de24f9dbb8570b4d68eb4b27be

resources/scripts/.appveyor-install-win.ps1

@@ -27,7 +27,7 @@ $wikiline = "| Windows | $date | [$git_revision](https://github.com/martinrotter
 (Get-Content $wikifile) -replace $regex, $wikiline | Set-Content -Encoding "utf8" $wikifile
 
 
-$file = (Get-ChildItem '*.exe').Name
+$file = (Get-ChildItem '*-win64.exe').Name
 echo "File to upload: $file"
 $url = curl.exe --upload-file "$file" "https://transfer.sh/$file" --silent
 echo "Obtained URL: $url"

resources/scripts/.travis-before-install.sh

@@ -14,7 +14,15 @@ if test "$TRAVIS_OS_NAME" = "osx"; then
   brew link --force gnu-sed
 else
   # Linux.
-  sudo add-apt-repository ppa:beineri/opt-qt591-trusty -y
+  sudo add-apt-repository ppa:ubuntu-toolchain-r/test -y
+  sudo add-apt-repository ppa:beineri/opt-qt-5.12.2-xenial -y
+  
   sudo apt-get update
-  sudo apt-get -y install qt59tools qt59base qt59webengine
+  sudo apt-get -y install gcc-7 g++-7 qt512tools qt512base qt512webengine qt512svg
+  sudo apt-get -y install openssl libssl-dev libgl1-mesa-dev 
+  
+  sudo update-alternatives --remove-all gcc 
+  sudo update-alternatives --remove-all g++
+  sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-7 50
+  sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-7 50
 fi

resources/scripts/.travis-install-linux.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 
 # Setup Qt build environment.
-source /opt/qt59/bin/qt59-env.sh
+source /opt/qt512/bin/qt512-env.sh
 mkdir rssguard-build && cd rssguard-build
 
 # Build application.