Merge pull request #5712 from EloProf/master

Fixed the *ix plural regular expression replacing the pattern in the middle of a word
Spacing.
Merge branch '4.2'
Merge.
Merge branch '4.2'
Add router to aliases.
[5.0] Removed unused use statement.
Revert a change to a symfony version constraint
Remove unused loop variable.
Add SVG to image validation rule
$replace does not need to be set that early
use only one condition in words
refactor with
Increment version.
Simplicity is an acquired taste. Agreed.
Add validation contracts.
Merge pull request #5737 from troyharvey/inspirational-quote-typo

Inspirational quote typo
Merge pull request #5728 from nCrazed/svg-image-validation

Add SVG to image validation rule
Update change log.
Merge pull request #5729 from lucasmichot/4.2-support-str-snake

[4.2] Suport Str : minor tweak