update fabpot Sphinx extensions version
Fixed the headers of one table
remove blank line to render the versionadded directive properly
minor #3920 [Components][Form] remove blank line to render the versionadded directive properly (xabbuh)

This PR was submitted for the master branch but it was merged into the 2.3 branch instead (closes #3920).

Discussion
----------

[Components][Form] remove blank line to render the versionadded directive properly

| Q             | A
| ------------- | ---
| Doc fix?      | yes
| New docs?     | no
| Applies to    | all
| Fixed tickets |

Commits
-------

7ade4f6 remove blank line to render the versionadded directive properly
Added a note for users with an existing AcmeDemoBundle
minor #3923 Fixed the headers of one table (javiereguiluz)

This PR was merged into the 2.4 branch.

Discussion
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Fixed the headers of one table

| Q             | A
| ------------- | ---
| Doc fix?      | yes
| New docs?     | no
| Applies to    | 2.4+
| Fixed tickets | -

Commits
-------

864d930 Fixed the headers of one table
minor #3922 update fabpot Sphinx extensions version (xabbuh)

This PR was merged into the 2.3 branch.

Discussion
----------

update fabpot Sphinx extensions version

| Q             | A
| ------------- | ---
| Doc fix?      | yes
| New docs?     | no
| Applies to    | all
| Fixed tickets |

As described by @stof in #3918 this pull requests updates the Sphinx extensions to the version that ignores ``*.pyc`` files.

Commits
-------

62b6185 update fabpot Sphinx extensions version
Merge branch '2.3' into 2.4
Merge branch '2.4' into 2.5
Merge branch '2.4'
Fixed the indentation of two code blocks
#3921 - explicit 'your_user_provider' configuration parameter
Removed the old syntax and left just the "with" keyword syntax
feature #3916 [Component][EventDispatcher] documentation for the TraceableEventDispatcher (xabbuh)

This PR was merged into the 2.3 branch.

Discussion
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[Component][EventDispatcher] documentation for the TraceableEventDispatcher

| Q             | A
| ------------- | ---
| Doc fix?      | no
| New docs?     | yes
| Applies to    | 2.3, 2.4
| Fixed tickets | #3879

After this has been merged, the document has to be updated for Symfony 2.5 and higher to reflect that the ``TraceableEventDispatcher`` is now part of the EventDispatcher component.

Commits
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1160f7c add documentation for the TraceableEventDispatcher class
Merge branch '2.3' into 2.4
Merge branch '2.4' into 2.5
Merge branch '2.4'
minor #3925 Fixed the indentation of two code blocks (javiereguiluz)

This PR was merged into the 2.3 branch.

Discussion
----------

Fixed the indentation of two code blocks

| Q             | A
| ------------- | ---
| Doc fix?      | yes
| New docs?     | no
| Applies to    | 2.3+
| Fixed tickets | -

Commits
-------

c8dbda9 Fixed the indentation of two code blocks
Merge branch '2.3' into 2.4
Merge branch '2.4' into 2.5