Add link to download PDF of documentation

This commit adds a sidebar box with a link to the
Fuel Development documentation in the form of a
PDF.  The PDF document will be built automatically
by Jenkins when the docs are built.

Change-Id: I45a07043340b50c24dadee8143a3e475c239d545
Implements: blueprint fuel-web-docs-dev-env-restructure
Added muliple vCenter cluters support in fuel-ui

Implements: blueprint vcenter-hv-full-scale-support
Change-Id: Ia93651de680099dfc8077b9a2f3c9faf185e646d
Upgrades, moved from yaml based config to python based

We had a lot of problems with yaml based config
which forced us to make hacks in buisness logic
layer as result code became messy, now config
fully generated on top layer and engines get
ready to use config.

blueprint upgrade-to-5-1
Change-Id: I8afa8c34d0c47769ccc52bee38b95cab42937998
fuel-upgrade: call rollback for used upgraders

We have to call rollback only for those upgraders that already completed
or failed. We don't need to call rollback for upgraders that wasn't
started yet.

Change-Id: Ia6b9f82b3441b184934f78f27f6da5b38942c85c
Closes-Bug: #1337927
Merge "Added muliple vCenter cluters support in fuel-ui"
Upgrades, add exceptions logging

Closes-bug: #1338530
blueprint upgrade-to-5-1

Change-Id: I7bffb7268cf99335646afe2a6e6629538b14ddd3
Fixes vCenter cluster regex

Change-Id: I1eb3301f0e938f0ed02b4fd194da3e7e0606faa7
Fixes settings validation

Change-Id: I74b990ffc4b3c29fbedfbc2cf601c468f5e4b9f2
Merge "Upgrades, add exceptions logging"
add vmware vcenter storage checkbox to openstack.yaml

partially implements: blueprint vcenter-hv-full-scale-support

Change-Id: I7bdc2f951d81bb8bd4df671e5ac844dc63c4ec5c
Merge "Upgrades, moved from yaml based config to python based"
Merge "fuel-upgrade: call rollback for used upgraders"
Merge "Fixes settings validation"
Merge "add vmware vcenter storage checkbox to openstack.yaml"
Locked settings warning in the Display Changes dialog

Closes-Bug:#1325710

Change-Id: Ib35df837bcdfd5e908c1caa23649e648dbe06acc
fuel-upgrade: implements action system

Action system is a flexible approach to execute consequentially some
input actions. For now we have only filesystem-related actions.

Implements blueprint upgrade-to-5-1

Change-Id: I4d2477ad104692f0d62482e4b0436980d307db09
Keystone Authorization for UI

Implements blueprint access-control-master-node

Change-Id: Ib8627701c30c74cd8c5afb3dde1f12e2aa033c91
[Settings tab] "Disable" action for setting group

Change-Id: I7bd6eeedfcb79f1c2c123143b174f0c3e0d1e570
Merge "fuel-upgrade: implements action system"
Allow to use 'version' model in restrictions for settings

This change will allow to hide settings in non-experimental builds

Change-Id: I0dd558a49fe6c4c72f07779b60c980a9581471c0