Keep concrete5 composer.lock
add codesniffer
Revert "add codesniffer"

This reverts commit 4c3fe9300905ea6b053f99ebcbcbbd7be195c453.
Avoid call_user_func_array in query method
reformat explore controller
Fix #559, make sitemap flat view work.
Reformat sitemap_data tool
PSR-2
Indentation fixes
Show error and inhibit installation of invalid new themes
Check page_theme.php and improve theme name/description handling

- Let's check that page_theme.php defines correct class name, namespace and inheritance
- Let's introduce two new methods: getThemeName and getThemeDescription
Handle packaged themes
Change force upgrade url to new url
Add ability to replace local install help forum url

Show the language specific installation help forum url.
marketplace updates
more work on marketplace
more work on marketplace
tweak
Merge branch 'concrete5-5.7.0-559' of https://github.com/KorvinSzanto/concrete5-5.7.0 into KorvinSzanto-concrete5-5.7.0-559
Work on pagination