Bug 368100

All icons from a project tree are gone, icons from menu bar(build, stop, execute etc) gone too. Here's a picture http://i.imgur.com/ZJw2f4c.png

Reproducible: Always

Steps to Reproduce:
I've just updated my arch linux(everything) including kdevelop 4.7 and tried to run kdevelop 5.0-1 https://www.archlinux.org/packages/extra/x86_64/kdevelop/

Actual Results:  
Kdevelop started but all icons are missing.

Expected Results:  
Expected to see screenshot from kdevelop blog post about update to 5.0 with icons near every file in a project tree, icons instead of text buttons.

Kdevelop prints the following when I open it with a loaded session:
Ninja plugin installed but ninja is not installed.
Could not load plugin "KDevNinjaBuilder" , it reported the error: "" Disabling the plugin now.
Ninja plugin installed but ninja is not installed.
Could not load plugin "KDevNinjaBuilder" , it reported the error: "" Disabling the plugin now.
QFont::setPointSizeF: Point size <= 0 (0.000000), must be greater than 0
qrc:/qml/area_code.qml:38:13: QML Image: Failed to get image from provider: image://icon/kdevelop
qrc:/qml/area_code.qml:38:13: QML Image: Failed to get image from provider: image://icon/kdevelop
Invalid return type in method "core"
Invalid return type in method "extensions"
KSambaShare: Could not find smb.conf!
Couldn't start kuiserver from org.kde.kuiserver.service: QDBusError("org.freedesktop.DBus.Error.ServiceUnknown", "The name org.kde.kuiserver was not provided by any .service files")
Invalid return type in method "core"
Invalid return type in method "extensions"

Whe I open it with an empty session I get all of the above +
/usr/bin/cat: /home/myusername/.local/share/kdevelop/sessions/{58498bce-0d62-4620-80f9-718dbf2aabb5}/default.sh: No such file or directory
Invalid return type in method "core"
Invalid return type in method "extensions"
My arch setup:
Distro: Arch Linux
Kernel: 4.6.4-1-ARCH
Window Manager: i3
Desktop Environment: