MOBILE-3432 core: Make file type exclusion modal always on top

src/app/app.scss

@@ -873,6 +873,10 @@ ion-app.app-root {
     height: 100% !important;
   }
 
+  .core-modal-force-on-top {
+    z-index: 100000 !important;
+  }
+
   @media only screen and (min-height: 400px) and (min-width: 300px) {
       .core-modal-lateral {
         @include core-split-area-end();

src/assets/lang/en.json

@@ -1374,6 +1374,7 @@
     "core.cannotconnectverify": "<strong>Please check the address is correct.</strong>",
     "core.cannotdownloadfiles": "File downloading is disabled. Please contact your site administrator.",
     "core.cannotopeninapp": "This file may not work as expected on this device. Would you like to open it anyway?",
+    "core.cannotopeninappdownload": "This file may not work as expected on this device. Would you like to download it anyway?",
     "core.captureaudio": "Record audio",
     "core.capturedimage": "Taken picture.",
     "core.captureimage": "Take picture",
@@ -1526,6 +1527,7 @@
     "core.done": "Done",
     "core.download": "Download",
     "core.downloaded": "Downloaded",
+    "core.downloadfile": "Download file",
     "core.downloading": "Downloading",
     "core.edit": "Edit",
     "core.editor.autosavesucceeded": "Draft saved.",

src/lang/en.json

@@ -17,6 +17,7 @@
     "cannotconnectverify": "<strong>Please check the address is correct.</strong>",
     "cannotdownloadfiles": "File downloading is disabled. Please contact your site administrator.",
     "cannotopeninapp": "This file may not work as expected on this device. Would you like to open it anyway?",
+    "cannotopeninappdownload": "This file may not work as expected on this device. Would you like to download it anyway?",
     "captureaudio": "Record audio",
     "capturedimage": "Taken picture.",
     "captureimage": "Take picture",
@@ -83,6 +84,7 @@
     "done": "Done",
     "download": "Download",
     "downloaded": "Downloaded",
+    "downloadfile": "Download file",
     "downloading": "Downloading",
     "edit": "Edit",
     "emptysplit": "This page will appear blank if the left panel is empty or is loading.",

src/providers/utils/dom.ts

@@ -1287,7 +1287,7 @@ export class CoreDomUtilsProvider {
             ];
 
             if (!title) {
-                options.cssClass = 'core-nohead';
+                options.cssClass = (options.cssClass || '') + ' core-nohead';
             }
 
             this.showAlertWithOptions(options, 0);