Add span wrapper around button caption text

Reasons:
- can show or hide the button text with CSS (assuming
  tv-config-toolbar-text is yes).
- can have different looking buttons in the page controls versus the
  view toolbar, etc
- more flexibility styling the button appearance, for example you
  can change the text size compared to the icon size
- button appearance is more themeable

core/ui/PageControls/closeall.tid

@@ -8,6 +8,6 @@ description: {{$:/language/Buttons/CloseAll/Hint}}
 {{$:/core/images/close-all-button}}
 </$list>
 <$list filter="[<tv-config-toolbar-text>prefix[yes]]">
-<$text text={{$:/language/Buttons/CloseAll/Caption}}/>
+<span class="tc-btn-text"><$text text={{$:/language/Buttons/CloseAll/Caption}}/></span>
 </$list>
 </$button>

core/ui/PageControls/controlpanel.tid

@@ -8,6 +8,6 @@ description: {{$:/language/Buttons/ControlPanel/Hint}}
 {{$:/core/images/options-button}}
 </$list>
 <$list filter="[<tv-config-toolbar-text>prefix[yes]]">
-<$text text={{$:/language/Buttons/ControlPanel/Caption}}/>
+<span class="tc-btn-text"><$text text={{$:/language/Buttons/ControlPanel/Caption}}/></span>
 </$list>
 </$button>

core/ui/PageControls/encryption.tid

@@ -9,7 +9,7 @@ description: {{$:/language/Buttons/Encryption/Hint}}
 {{$:/core/images/locked-padlock}}
 </$list>
 <$list filter="[<tv-config-toolbar-text>prefix[yes]]">
-<$text text={{$:/language/Buttons/Encryption/ClearPassword/Caption}}/>
+<span class="tc-btn-text"><$text text={{$:/language/Buttons/Encryption/ClearPassword/Caption}}/></span>
 </$list>
 </$button>
 </$reveal>
@@ -19,7 +19,7 @@ description: {{$:/language/Buttons/Encryption/Hint}}
 {{$:/core/images/unlocked-padlock}}
 </$list>
 <$list filter="[<tv-config-toolbar-text>prefix[yes]]">
-<$text text={{$:/language/Buttons/Encryption/SetPassword/Caption}}/>
+<span class="tc-btn-text"><$text text={{$:/language/Buttons/Encryption/SetPassword/Caption}}/></span>
 </$list>
 </$button>
 </$reveal>

core/ui/PageControls/full-screen.tid

@@ -8,6 +8,6 @@ description: {{$:/language/Buttons/FullScreen/Hint}}
 {{$:/core/images/full-screen-button}}
 </$list>
 <$list filter="[<tv-config-toolbar-text>prefix[yes]]">
-<$text text={{$:/language/Buttons/FullScreen/Caption}}/>
+<span class="tc-btn-text"><$text text={{$:/language/Buttons/FullScreen/Caption}}/></span>
 </$list>
 </$button>

core/ui/PageControls/home.tid

@@ -8,6 +8,6 @@ description: {{$:/language/Buttons/Home/Hint}}
 {{$:/core/images/home-button}}
 </$list>
 <$list filter="[<tv-config-toolbar-text>prefix[yes]]">
-<$text text={{$:/language/Buttons/Home/Caption}}/>
+<span class="tc-btn-text"><$text text={{$:/language/Buttons/Home/Caption}}/></span>
 </$list>
 </$button>

core/ui/PageControls/import.tid

@@ -9,7 +9,7 @@ description: {{$:/language/Buttons/Import/Hint}}
 {{$:/core/images/import-button}}
 </$list>
 <$list filter="[<tv-config-toolbar-text>prefix[yes]]">
-<$text text={{$:/language/Buttons/Import/Caption}}/>
+<span class="tc-btn-text"><$text text={{$:/language/Buttons/Import/Caption}}/></span>
 </$list>
 </$button>
 <$browse/>

core/ui/PageControls/language.tid

@@ -15,7 +15,7 @@ $(languagePluginTitle)$/icon
 </span>
 </$list>
 <$list filter="[<tv-config-toolbar-text>prefix[yes]]">
-<$text text={{$:/language/Buttons/Language/Caption}}/>
+<span class="tc-btn-text"><$text text={{$:/language/Buttons/Language/Caption}}/></span>
 </$list>
 </$button>
 <$reveal state=<<qualify "$:/state/popup/language">> type="popup" position="below" animate="yes">

core/ui/PageControls/more-page-actions.tid

@@ -11,7 +11,7 @@ $:/config/PageControlButtons/Visibility/$(listItem)$
 {{$:/core/images/down-arrow}}
 </$list>
 <$list filter="[<tv-config-toolbar-text>prefix[yes]]">
-<$text text={{$:/language/Buttons/More/Caption}}/>
+<span class="tc-btn-text"><$text text={{$:/language/Buttons/More/Caption}}/></span>
 </$list>
 </$button>
 <$reveal state=<<qualify "$:/state/popup/more">> type="popup" position="below" animate="yes">

core/ui/PageControls/new-journal.tid

@@ -10,7 +10,7 @@ description: {{$:/language/Buttons/NewJournal/Hint}}
 {{$:/core/images/new-journal-button}}
 </$list>
 <$list filter="[<tv-config-toolbar-text>prefix[yes]]">
-<$text text={{$:/language/Buttons/NewJournal/Caption}}/>
+<span class="tc-btn-text"><$text text={{$:/language/Buttons/NewJournal/Caption}}/></span>
 </$list>
 </$button>
 \end

core/ui/PageControls/newtiddler.tid

@@ -8,6 +8,6 @@ description: {{$:/language/Buttons/NewTiddler/Hint}}
 {{$:/core/images/new-button}}
 </$list>
 <$list filter="[<tv-config-toolbar-text>prefix[yes]]">
-<$text text={{$:/language/Buttons/NewTiddler/Caption}}/>
+<span class="tc-btn-text"><$text text={{$:/language/Buttons/NewTiddler/Caption}}/></span>
 </$list>
 </$button>

core/ui/PageControls/refresh.tid

@@ -8,6 +8,6 @@ description: {{$:/language/Buttons/Refresh/Hint}}
 {{$:/core/images/refresh-button}}
 </$list>
 <$list filter="[<tv-config-toolbar-text>prefix[yes]]">
-<$text text={{$:/language/Buttons/Refresh/Caption}}/>
+<span class="tc-btn-text"><$text text={{$:/language/Buttons/Refresh/Caption}}/></span>
 </$list>
 </$button>

core/ui/PageControls/savewiki.tid

@@ -9,7 +9,7 @@ description: {{$:/language/Buttons/SaveWiki/Hint}}
 {{$:/core/images/save-button}}
 </$list>
 <$list filter="[<tv-config-toolbar-text>prefix[yes]]">
-<$text text={{$:/language/Buttons/SaveWiki/Caption}}/>
+<span class="tc-btn-text"><$text text={{$:/language/Buttons/SaveWiki/Caption}}/></span>
 </$list>
 </span>
 </$button>

core/ui/PageControls/storyview.tid

@@ -13,7 +13,7 @@ $:/core/images/storyview-$(storyview)$
 </$set>
 </$list>
 <$list filter="[<tv-config-toolbar-text>prefix[yes]]">
-<$text text={{$:/language/Buttons/StoryView/Caption}}/>
+<span class="tc-btn-text"><$text text={{$:/language/Buttons/StoryView/Caption}}/></span>
 </$list>
 </$button>
 <$reveal state=<<qualify "$:/state/popup/storyview">> type="popup" position="below" animate="yes">

core/ui/PageControls/tag-button.tid

@@ -8,6 +8,6 @@ description: {{$:/language/Buttons/TagManager/Hint}}
 {{$:/core/images/tag-button}}
 </$list>
 <$list filter="[<tv-config-toolbar-text>prefix[yes]]">
-<$text text={{$:/language/Buttons/TagManager/Caption}}/>
+<span class="tc-btn-text"><$text text={{$:/language/Buttons/TagManager/Caption}}/></span>
 </$list>
 </$button>

core/ui/PageControls/theme.tid

@@ -8,7 +8,7 @@ description: {{$:/language/Buttons/Theme/Hint}}
 {{$:/core/images/theme-button}}
 </$list>
 <$list filter="[<tv-config-toolbar-text>prefix[yes]]">
-<$text text={{$:/language/Buttons/Theme/Caption}}/>
+<span class="tc-btn-text"><$text text={{$:/language/Buttons/Theme/Caption}}/></span>
 </$list>
 </$button>
 <$reveal state=<<qualify "$:/state/popup/theme">> type="popup" position="below" animate="yes">