i18n fixes

- spell "JavaScript", "OK", "UI", and "URL" correctly
- translate few untranslatable UI strings
- style fixes

src/contents/ui/InputSheet.qml

@@ -60,7 +60,7 @@ Kirigami.OverlaySheet {
         }
 
         Controls.Button {
-            text: i18n("Ok")
+            text: i18n("OK")
             Layout.alignment: Qt.AlignRight
             onClicked: accept()
         }

src/contents/ui/Settings.qml

@@ -33,7 +33,7 @@ Kirigami.ScrollablePage {
         id: settingsPage
 
         Controls.CheckDelegate {
-            text: i18n("Enable javascript")
+            text: i18n("Enable JavaScript")
             Layout.fillWidth: true
             onCheckedChanged: {
                 var settings = currentWebView.settings;
@@ -61,7 +61,7 @@ Kirigami.ScrollablePage {
         InputSheet {
             id: homePagePopup
             title: i18n("Homepage")
-            description: i18n("website that should be loaded on startup")
+            description: i18n("Website that should be loaded on startup")
             placeholderText: browserManager.homepage
             onAccepted: {
                 if (homePagePopup.text !== "")
@@ -72,7 +72,7 @@ Kirigami.ScrollablePage {
         InputSheet {
             id: searchEnginePopup
             title: i18n("Search Engine")
-            description: i18n("Base url of your preferred search engine")
+            description: i18n("Base URL of your preferred search engine")
             placeholderText: browserManager.searchBaseUrl
             onAccepted: {
                 if (searchEnginePopup.text !== "")

src/contents/ui/WebView.qml

@@ -164,7 +164,7 @@ WebEngineView {
     onNewViewRequested: {
         if (request.userInitiated) {
             newTab(request.requestedUrl.toString())
-            showPassiveNotification("Website was opened in a new tab")
+            showPassiveNotification(i18n("Website was opened in a new tab"))
         } else {
             newTabQuestion.url = request.requestedUrl
             newTabQuestion.visible = true

src/contents/ui/webbrowser.qml

@@ -28,7 +28,7 @@ import org.kde.kirigami 2.4 as Kirigami
 
 Kirigami.ApplicationWindow {
     id: webBrowser
-    title: "Angelfish Webbrowser"
+    title: i18n("Angelfish Web Browser")
 
     /** Pointer to the currently active view.
      *

src/main.cpp

@@ -23,6 +23,8 @@
 #include <QCommandLineOption>
 #include <QtWebEngine>
 
+#include <KLocalizedString>
+
 #include "browsermanager.h"
 #include "urlfilterproxymodel.h"
 
@@ -38,8 +40,8 @@ Q_DECL_EXPORT int main(int argc, char *argv[])
     // Command line parser
     QCommandLineParser parser;
     QCommandLineOption helpOption = parser.addHelpOption();
-    parser.addPositionalArgument("url", "An url to open", "[url]");
-    parser.addOption({"webapp-container", "Start without ui"});
+    parser.addPositionalArgument("url", i18n("URL to open"), "[url]");
+    parser.addOption({"webapp-container", i18n("Start without UI")});
     parser.parse(QGuiApplication::arguments());
 
     // QML loading