added user input functionality to dropdown component

small alteration on handleSearch function in componentDropdown

modified search on dropdown to ignore czech chars and few minor tweaks

added placeholder to input on dropdown
Filter changed to work with dropdowns containing search input, changed CSS of dropdowns, dropdown items added to an extra div
us41432: renamed function, helper used to access objects' properties
TempalteList and Implicit tasks added notification center
Helper: added some functions for woking with date and checker if string is a number
ComponentAddTask and some other components + helper and bulk was edited