(cherry picked from commit 4a8038fc)

IDEA-CR-31266
(cherry picked from commit 1f5dece7)

disabling inspections
New registry key: ide.disable.editor.tooltips=false

(cherry picked from commit 304389b4)
IDEA-CR-31364

(IDEA-CR-31369)

From snapcore/snapcraft:latest to jetbrainsinfra/snapcraft:2.35

(cherry picked from commit 444908e4)

It was intended to pass only available actions into getGroupText() as
per its documentation.

(cherry picked from commit 96fb219d) (IDEA-CR-30675)

IDEA-189387 Pycharm 2018.1 won't start after patch update
IDEA-122925 IntelliJ Fails to apply IDE update patch due to faulty "IOException: No Space Left on Device /tmp"
IDEA-162267 Update requires excessive disk space
IDEA-167297 After broken update can't run pycharm
PY-15478 Error when applying patch 4.0.6 and now can't start PyCharm

IDEA-CR-31329

(cherry picked from commit 290fdd81)

(cherry picked from commit d0ed0477)

(cherry picked from commit 75575ba5)

(cherry picked from commit 7c34713a)

(cherry picked from commit 4edb0480)

(cherry picked from commit 60364bb1)

(cherry picked from commit 88fbb302)

(cherry picked from commit 9912c9b6)

(cherry picked from commit de907c6c)

Move logic about the decision to use/not to use MagicAccessorImpl and
access through the reflection into ExtractLightMethodObjectHandler

(cherry picked from commit 00b02cf3)

(cherry picked from commit 444e1f68)

(cherry picked from commit 04f0e6e9)

see example in
EvaluationAccessTest.testCallDefaultMethodFromPublicBaseInterface

(cherry picked from commit 659a3a6d)

(cherry picked from commit 63e13170)

(cherry picked from commit da89b6f6)

(cherry picked from commit b51b2c8b)

(cherry picked from commit 783feba2)

(cherry picked from commit bc7a94b1)

(cherry picked from commit 08c86e04)

(cherry picked from commit 49b348d7)

Disable registry: debugger.compiling.evaluator.magic.accessor
Disabled by default after JDK 9

(cherry picked from commit da4402ac)

Supported expressions to replace:
* new InaccessibleConstructor(...)
* object.inaccessible[Static]Method(...)
* object.inaccessible[Static]Field
* InaccessibleClass.field[method()]
* Class::refToInaccessibleMethod

Not supported expressions:
OuterClass.this
AnyInaccessibleClass.class
method() for method with inaccessible return type
field for field with inaccessible type

(cherry picked from commit a6319da1)

The commit reverts source root order respect for import statements thus
reopening PY-28321. The reason is that until pkg_resources and pkgutil
namespace packages are not implemented (see PY-16688, PY-23087) the
original fix leads to false positives in projects relying on this
functionality.

As soon as namespace packages support via pkg_resources and pkgutil will
 be implemented the change should be reverted back to close PY-28321.

(cherry picked from commit 7da7b7ac)

(IDEA-CR-31323)

r=Starovoyt
(cherry picked from commit eb0b58a9)

(cherry picked from commit 4c4692a2)

These actions can cause different hard-to-debug issues in UndoManager.
One of the known issues is mishandling of transparent actions.

Redo action is being registered only at the end of command.
If the document was modified in a transparent command, redo action will not
be registered until when next (completely unrelated) command is finished.

As a result, it causes "Can't Undo" errors, if that other command was
not supposed to be undoable (and was performed on workspace.xml or
some lightweight temporal file)

(cherry picked from commit 4a343892)
IDEA-CR-31263

Partial rollback for Windows only:
Rollback popup hiding on application deactivation

(cherry picked from commit cef60c6a)
IDEA-CR-31286

(cherry picked from commit cd831956)

Put matplotlib import hook back before a file execution, because it's useful for data scientists. If it affects program execution, it can be easily disabled by other users.

(cherry picked from commit 5e0f63cc)