Remove array_get() null default value)
Merge pull request #5766 from lucasmichot/4.2-array-get-null-default

[4.2] Remove array_get() null default value
Minor formatting
Remove useless else...return
Global formatting fix
Simplify extractOptionalParameters
Merge pull request #5782 from lucasmichot/4.2-routes-extractoptionalparameters

[4.2] Route : simplify extractOptionalParameters
Merge pull request #5781 from lucasmichot/4.2-formatting

[4.2] Global formatting fix
Merge pull request #5779 from lucasmichot/4.2-useless-else

[4.2] Remove useless else...return
Merge pull request #5777 from lucasmichot/4.2-pagination-fragment

[4.2] Pagination : minor formatting
Fix conflict
Merge pull request #5780 from lucasmichot/4.2-validation-validatemimes

[4.2] Validation : simplify validateMimes
Extract method for if check.
Typo
Factorize replaceDigitsBetween
Remaining useless else
Add missing new line
Remove useless else with throw
Initialize array in SQLiteGrammar.php
Remove duplicate unset()