LoginLink widget added

Display a "login" link or when logged in "welcome user x"
We can import a .csv with profiles
We can export (download) an import template
Changelog updated
BackendModel::insertExtra integrated
insertExtra used in different modules

ContentBlocks, Faq, FormBuilder and Location now use
BackendModel::insertExtra()
BackendFaqModel updated

Now uses BackendModel::deleteExtraById() and BackendModel::updateExtra()
BackendContentBlocksModel updated

Now uses BackendModel::deleteExtraById() and BackendModel::updateExtra()
BackendLocationModel updated

Now uses BackendModel::deleteExtraById() and BackendModel::updateExtra()
Changelog updated
Merging master changelog
Merging master
Merging master changelog
Merging master
Additional cookie bar translations
Added cookie bar translations to settings module
Using Backend_cache_path
Creating shorter lines
PSR-2-code-styling applied
PSR-2-code-styling applied