EA-61643 - java.lang.ClassCastException: org.jetbrains.jet.lang.psi.JetClass cannot be cast to com.intellij.psi.PsiClass

(cherry picked from commit ecdd37cc44f9beb6870c78c3432b1fddcdab8292)
IDEA-131783 debugger: icon value is partly shown in variables view

(cherry picked from commit 09442e164f8dc7f63be30b34308870e52965d006)
WEB-2323 HTML formatter can only format 200 lines.
(cherry picked from commit 9e854ec)
IDEA-131653 The "Value Auto Tooltip" option in the Debugger Settings menu does not work properly

(cherry picked from commit e82a421d54652e2f7aeecedc177a9ada10079951)
SE gear icon
+ SE settings icon
SE settings icon style: hamburger -> gear
Merge remote-tracking branch 'origin/139' into 139
New welcome screen icons for AppCode and CLIon
(cherry picked from commit 21a02e9)
introduce new static method isEnabled
add "Check for Update" action to the new welcome screen
Mark dirty & batch refresh VirtualFiles instead of refreshing on-by-one

Fixes IDEA-120150, IDEA-115773
(cherry picked from commit 14cf1bc)
[vcs] IDEA-119375 assign shortcut to "Move to Changelist" only if not found in keymap

(cherry picked from commit f6008a3)
[vcs] IDEA-131714 copy full revision number at least until the option
is available for user and/or we guarantee that the short hash we
give is enough.

(cherry picked from commit cc21d5c)
[log] more debug info for "no references pointing to head" error

Check if GitLogProvider returns sync data
(cherry picked from commit 6d96f36)
[git log] Load first commit block always with refs

To avoid desynchronization when refresh starts from scratch.
(cherry picked from commit 0062ad3)
[git] IDEA-130660 Don't allow empty or spaces branch names
(cherry picked from commit 6f950bd)
IDEA-58130 Improve editor performance during working with large files written in a single line

(cherry picked from commit 9ea26bc614c1f9add7255f5639b894a9f0c9a4ee)
refactoring (following CR-IC-6668)

(cherry picked from commit 50b087323799204fdb4d8e0a51e52526d5572bd5)
IDEA-131521 Provide unified capitalization

(cherry picked from commit 8be90ffb9e1f7156d51f9b404cdbfc7591691f82)