fixed output of bag values

Call json_encode with flags: JSON_UNESCAPED_SLASHES and
JSON_UNESCAPED_UNICODE
merged branch pvolok/fix_7540 (PR #7643)

This PR was submitted for the master branch but it was merged into the 2.2 branch instead (closes #7643).

Discussion
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[WebProfilerBundle] fixed output of bag values

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #7540
| License       | MIT
| Doc PR        | -

Call json_encode with flags: JSON_UNESCAPED_SLASHES and
JSON_UNESCAPED_UNICODE

Commits
-------

7ee8b10 [WebProfilerBundle] fixed output of bag values
[HttpKernel] fixed the Kernel when the ClassLoader component is not available (closes #7406)
[Console] Fix merging of application definition, fixes #7068, replaces #7158
merged branch Seldaek/consmerge (PR #7650)

This PR was merged into the 2.2 branch.

Discussion
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[Console] Fix merging of application definition

Fixes #7068, replaces #7158 - the fix there introduces a regression and always shows the application arguments in the commands help (i.e. it lists "command" as an argument to every command, except list because it overrides getNativeDefinition).

Commits
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46909fa [Console] Fix merging of application definition, fixes #7068, replaces #7158
Fix download over SSL using IE < 8 and binary file response
merged branch nlegoff/ie_download_over_ssl (PR #7651)

This PR was merged into the 2.2 branch.

Discussion
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[HTTPFoundation]  Fix download over SSL using IE < 8 and binary file response

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets |
| License       | MIT
| Doc PR        |

related to #7153

Commits
-------

4c51ec7 Fix download over SSL using IE < 8 and binary file response