[ADF-1434] Theming ADF component (#2228)

* start custom theming adf

* demo shell cleaning

* login mdl cleaning

* uploader mdl cleaning

* prebuilt themes

* theme picker in demo shell

* clean custom colors and mdl

* fix rebase errors

* theming from color style guide

* dev default theme orange purple

* fix color accent inverted in picker

* fix test and add colors classes

* fix tag component theming issues

* fix datatable theming

* add theming guides

ng2-components/ng2-alfresco-upload/src/components/file-uploading-dialog.component.html

@@ -67,6 +67,7 @@
 
     <footer class="upload-dialog__actions">
         <button
+            color="primary"
             *ngIf="!uploadList.isUploadCompleted() && !uploadList.isUploadCancelled()"
             md-button
             (click)="uploadList.cancelAllFiles($event)">
@@ -76,6 +77,7 @@
         <button
             *ngIf="uploadList.isUploadCompleted() || uploadList.isUploadCancelled()"
             md-button
+            color="primary"
             (click)="close($event)">
             {{ 'ADF_FILE_UPLOAD.BUTTON.CLOSE' | translate }}
         </button>