improved duration and minute selector (#2264)

* do not close modal if form is dirty
* deprecated TimesheetConfiguration
* inject timezone in form types
* cleanup usage of UserDateTimeFactory
* allow to configure increment steps for minutes
* use 15 minutes step for datetimepicker in project edit form
* use rounding rules for increments in minute select for begin and end
* allow duration in multi user and admin timesheet forms
* make dropdown values configurable

public/build/entrypoints.json

@@ -5,10 +5,10 @@
         "build/runtime.098eaae1.js",
         "build/0.79dbdbb9.js",
         "build/1.32489d92.js",
-        "build/app.14359ac7.js"
+        "build/app.b5e6aadf.js"
       ],
       "css": [
-        "build/app.4ac0cd3e.css"
+        "build/app.856a8108.css"
       ]
     },
     "invoice": {
@@ -53,8 +53,8 @@
     "build/runtime.098eaae1.js": "sha384-xNNrNinl64G3nCUrIskgSjU0mUXXCB9lj6XCSInBTwxSKXk8uTMafnLHtdWdIGtd",
     "build/0.79dbdbb9.js": "sha384-U2Ao0ORAZ8PCeDmyRsqQFET3hc7pfUBimq0PrqFdG4/s0Bdi+qBj4TJK3o70bCd5",
     "build/1.32489d92.js": "sha384-wVkjh5FzjFhMV4S4uNP23E/OLBOf+Zi7t3lpm9eWzoMr/tm2pydT+q0Op1XHuoUP",
-    "build/app.14359ac7.js": "sha384-0NC+3yBDQZbvxjD4XvaoY63NbDTbNsuCCkH4wf/mgkcK3w35IZmxZS8h2rWaEaG8",
-    "build/app.4ac0cd3e.css": "sha384-+xdvrbdBDKZzKlUgNBm8TzUMuceyw62wIe2IMdm4hy2yYQdBeEZ/RUNf6Z5piG/r",
+    "build/app.b5e6aadf.js": "sha384-ucXoJUHndEr+mEfdM0NmShTqQ8WrbcY64paubzUBfVD3v1Ta2rIgJ4vqQskuA9mg",
+    "build/app.856a8108.css": "sha384-LXQ3xtGnzZrgD1R/P0zS2d34VL7+QYCeQvjV0hzFHeoM/IppVbIUAt2FzuORmCuj",
     "build/invoice.74279541.js": "sha384-2BXic5Sgorf2tXai6zSAN4wLY2dbg06L03/xMKW6itMcszvtnRArKzfBh6DNcF3f",
     "build/invoice.13d8ef4e.css": "sha384-B6RN/wZJToSBCZk2JeLokIqWEhbh+Eb9arYbt9dM+YoC2Z6PnCeTwTqSGyexWWJh",
     "build/invoice-pdf.0efd7a97.js": "sha384-bSdIeRCtEJiYYuc2reb0e5CpJ1Kbd1lQNEkElMTiq1SX0IINzdwJJYf6WnCcHrNC",