ui: diverse improvements before release

* hide build file content
* use small buttons in all windows
* new design for start screen
* fixed design for enter license ui
* added spacing to summary
* brighter icons in wizzard
* added template icon for graph
* smoothing for graph icons
* switched error icon to dot
* fixed error message tooltip immediatly disappearing
* menu item for opening documentation

bin/app/data/gui/license/license.css

@@ -1,3 +1,7 @@
+QLabel {
+	font-size: 12pt;
+}
+
 #licenseField {
 	font-family: "<setting:font_name>";
 	font-size: 12pt;

bin/app/data/gui/setting_window/window.css

@@ -65,11 +65,11 @@ QLineEdit:disabled {
 #windowButton {
 	background: white;
 	border: 1px solid lightgray;
-	border-radius: 10px;
+	border-radius: 8px;
 	color: black;
-	font-size: 17pt;
-	height: 30px;
-	width: 140px;
+	padding: 3px 5px 2px;
+	font-size: 14pt;
+	min-width: 5em;
 }
 
 #windowButton:hover {

bin/app/data/gui/startscreen/startscreen.css

@@ -1,13 +1,16 @@
 #projectButton {
 	background: white;
 	border: 1px solid lightgray;
-	border-radius: 10px;
-	font-size: 17pt;
+	border-radius: 8px;
+	color: black;
+	padding: 3px 5px 2px;
+	font-size: 14pt;
+	min-width: 6em;
 }
 
 #projectButton:hover {
-	background: #2D3F85;
 	color: white;
+	background: #2D3F85;
 }
 
 #recentButton {
@@ -18,7 +21,7 @@
 }
 
 #recentButton:hover {
-	background-color: rgba(45, 63, 133, 70);
+	background-color: #CFD2E0;
 	border-radius: 10px;
 }