Slider: avoid clicking triggering right after dragend

Select: show dropdown when options are given in remote mode

German native speaker here,
did my best to improve the locale.
Could not see the actual usage of some items like select.noMatch so I hope it still matches the use case.

Select: refactor and bug fix

Slider: fix a decimal display bug

Alert: improve style

Created tr-TR.js for Turkish Language Support

fix datetimepicker test