Final improvements (#389)

* orcid capitalized

* ismn link updated

* pictures updated

* some code refinement done

* routerLink set to home, otherwise the home menu item always has a class p-menuitem-link-active

* class p-menuitem-link-active styled

* some styling updated

* some styling updated

* title changed into pTooltip

* title changed into pTooltip; not needed styling removed

* some styling applied

* title changed into pTooltip

* title changed into pTooltip, tooltip life time added

* tooltip lifetime changed into a variable

* title changed into pTooltip, lifetime added

* title changed into pTooltip, lifetime added

* tooltip unified

* title changed into pTooltip

* tooltip lifetime moved to global parameters service

* tooltip lifetime updated with a global variable

* tooltip lifetime updated with a global variable

* tooltip lifetime updated with a global variable

* filters fixture updated

* some sorting of datasets and versions added

* information if the filter is included added so the question mark icon is styled properly

* sorting direction changed

* help icons added

* removed some code that caused errors

* changed index of the selected dataset so not the newest one is expanded by default

* docker settings updated for the test instance

* information about optional fields added

* size updated

* settings view updated so the news sections is visible also for non-logged in users

* diagram replaced

* test updated according to changes in the respective view

* diagram updated