Trim titles and tags before checking if empty

Closes #96

src/main/java/com/todoroo/astrid/activity/TaskEditFragment.java

@@ -685,7 +685,7 @@ ViewPager.OnPageChangeListener, EditNoteActivity.UpdatesChangedListener {
         shouldSaveState = false;
 
         // abandon editing in this case
-        if (title.getText().length() == 0 || TextUtils.isEmpty(model.getTitle())) {
+        if (title.getText().toString().trim().length() == 0 || TextUtils.isEmpty(model.getTitle())) {
             if (isNewTask) {
                 TimerPlugin.updateTimer(notificationManager, taskService, getActivity(), model, false);
                 taskDeleter.delete(model);
@@ -761,7 +761,7 @@ ViewPager.OnPageChangeListener, EditNoteActivity.UpdatesChangedListener {
             deleteButtonClick();
             return true;
         case android.R.id.home:
-            if (title.getText().length() == 0) {
+            if (title.getText().toString().trim().length() == 0) {
                 discardButtonClick();
             } else {
                 saveButtonClick();

src/main/java/com/todoroo/astrid/tags/TagsControlSet.java

@@ -106,6 +106,9 @@ public final class TagsControlSet extends PopupControlSet {
 
         LinkedHashSet<String> tags = getTagSet();
         for (String tag : tags) {
+            if (tag.trim().length() == 0) {
+                continue;
+            }
             if (builder.length() != 0) {
                 builder.append(", "); //$NON-NLS-1$
             }
@@ -334,6 +337,9 @@ public final class TagsControlSet extends PopupControlSet {
         });
 
         for (String tag : tags) {
+            if (tag.trim().length() == 0) {
+                continue;
+            }
             TagData tagData = tagDataDao.getTagByName(tag, TagData.NAME, TagData.UUID);
             if (tagData == null) {
                 tagData = new TagData();