Added some xml formats
[Component][Finder] Documented potential pitfalls when using iterator_to_array() with Finder.
Add hint to configure document root
Change 'note' to 'tip' block
Fix the "doctrine file uploads" cookbook examples, see symfony/symfony-docs#600
fixed explanations about how access control rules work
Furthering @fabpot's changes to the access_control explanations in the security chapter
tweaked text
cs fixes
more cs fixes
add missing space
end short descriptions in PHPdoc comment with a .
Added missing path prefix `/admin` to access_control
Adding a small document on the changes related to trusting proxy data
Improved "Setting up Permissions"

Signed-off-by: Manuel Reinhard <manu@sprain.ch>
Update reference/dic_tags.rst
Merge pull request #2123 from gido/add_prefix_access_control

Added missing path prefix `/admin` to access_control
[#2123] Tweaking access control fix - I want to highlight how the access_control keys - unless suffixed with the regex $ - are not exact matches
Merge pull request #2131 from sprain/improving_setting_up_permissions

Improved "Setting up Permissions"
[#2131] Furthering the excellent permissions changes made by @sprain