Manual CentOS Debranding

Backport patches for RHELAH /var and ISO default storage increase
Related: rhbz#1098303
Related: rhbz#1391725

rpmostreepayload: Stub out payload methods which use `import rpm` (walters)

Update translations (ljanda)

Delete file systems used only by a given installation (vponcova)

rpmostreepayload: [rhel7only] Move tmpfiles to after mount setup (walters)
rpmostreepayload: Handle /var as a user-specified mountpoint (walters)

Root checking fixes password for password from kickstart (mkolman)
Improve the GUI password checker (mkolman)
Respect changesok policy on root password spoke (mkolman)
Update translations of password checking strings (rvykydal)

Allow nonstrict behaviour for all passwords in tui (vponcova)
Fix setting errors and warnings in the StorageCheckHandler (vponcova)
Mark post inst tools as disabled only if firstboot --disable is used
Set the default filesystem type from a kickstart file (vponcova)

Show a no network warning for network installation source. (vponcova)
Show warnings about enabling the network time (vponcova)
Fix generating UUID even for pre snapshots (jkonecny)

Show the text of completions in the datetime spoke. (vponcova)
Look higher for the combobox associated with an entry (dshea)
Fix the addon handlers for the checkbox (vponcova)

network: handle multiple connections for one device better (rvykydal)
network: catch exception when reading in-memory connection being removed
Compare empty confirmation field against input (mkolman)

Properly iterate over kickstart locations in a job (vponcova)
Onlyuse devices of the ignoredisk command should be only disks (vponcova)
Fix device_name_is_disk to fully support raid devices (vponcova)

Adapt to treeinfo addon section format change (rvykydal)
Make geolocation with kickstart possible (mkolman)
Show or hide the content of the expander (vponcova)
Fix a typo in anaconda-pre.service (mkolman)

Adapt to treeinfo format change (variants -> addons) (rvykydal)
network: fix setting hostname via boot options (rvykydal)
Bump version of Pykickstart and Blivet (jkonecny)
Add XFS uuid changer (jkonecny)
Support --when parameter in snapshot (jkonecny)
Add snapshot support (jkonecny)

Update 64bit grub2 support to reflect packages as they actually landed
Fix potential bugs reported by Pylint 1.6 (mkolman)
Fix unused variables and imports (mkolman)
Disable Pylint false positives (mkolman)
Fix Pylint LoggingChecker usage (mkolman)
Call subprocess.Popen with absolute path to a binary (rvykydal)

Gtk: Fix css selectors. (vponcova)
Gtk: Set CSS names on all of the anaconda classes. (dshea)
Gtk: Fix deprecated pseudo-classes. (vponcova)
Gtk: Fix warnings in anaconda widgets. (dshea)
Gtk: Calculate the preferred size of the image. (vponcova)