[5.0] Removed unused use statement.
Revert a change to a symfony version constraint
Add SVG to image validation rule
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 #5722 from tmalecki/master

[5.0] Removed unused use statement.
Merge pull request #5724 from GrahamCampbell/patch-1

Revert a change to a symfony version constraint