[Component][Finder] Documented potential pitfalls when using iterator_to_array() with Finder.
Add hint to configure document root
Change 'note' to 'tip' block
Fixed Typo in Setting up permissions

Signed-off-by: Manuel Reinhard <manu@sprain.ch>
Changing title of cookbook dynamic_form_generation
Renamed file cookbook/form/dynamic_form_generation
Fix DependencyInjection example (Introduction)
[#2151] Reorganizing part of the monolog cookbook to put usage information up higher
Added documentation for service configurator feature.
[Cookbook] Bootstrapped article about removing bundles
Merge pull request #2067 from WouterJ/document_acme_removing

Bootstrapped article about removing bundles (especially the AcmeDemoBundle)
[#2178] Fixing bad reference to /components/yaml
[#2067] Tweaks to new remove "AcmeDemoBundle" entry

Biggest change was to rearrange steps so that all of the required steps are first, and the optional step (which doesn't apply to AcmeDemoBundle) is last.
[#2178] Fixing more bad yaml references
Fixing typo
[#2098] Fixing a few minor things
Merge pull request #2098 from jakzal/finder-iterator

[Component][Finder] Documented potential pitfalls when using iterator_to_array() with Finder
[#2100] Backporting a note that's on 2.1 and above only
[#2100] Partially clarifying information about URLs and document roots
Merge pull request #2100 from dreipunktnull/add_hint_about_vhost

Add hint to configure document root