r46092: added label and labelPosition attributes to ace:sliderEntry and to ace:themeSelect.
r46093: modified ace:themeSelect demo to use new label and labelPosition attributes.

ace:checkboxButton already has label and labelPosition attributes and they work in the same way as in other components. The only difference is that the default position is inField, and that is for backwards compatibility reasons, since that was the way it worked originally, even before the normalized label attributes were added.

The following components have a 'label' attribute, but they work in different ways and/or the components aren't input components: ace:dataExporter, ace:dynamicResource, ace:fileEntry, ace:subMenu, ace:tabPane.

ace:linkButton and ace:pushButton do not have a 'labelPosition' attribute. It's unclear if these attributes would apply to them.

Tested with ICEfaces 4 trunk r46094.
Styling issue when using sliderEntry label attribute and showLabels=false in Firefox browsers. When label is positioned at left or right the sliderEntry gains height and becomes taller than the slider itself. Not an issue when sliderEntry is positioned at top or bottom. Not an issue with Chrome or IE browsers. See attached screen shots sliderLeft.png and sliderTop.png.
In all browsers when showLabels=true, and the label is positioned at left or right, the label is positioned lower than the slider min/max labels. See screenshot showLabelTrue.png

QA test app /sliderEntryLabel.jsf added to:
http://dev.icesoft.com/svn/repo/qa/trunk/Regression-Icefaces4/Sparkle/Nightly/sliderEntry

r46107: fix for label-related alignment issues with ace:sliderEntry.

Tested with ICEfaces 4 trunk r46108.
Verified sliderEntry label alignment issues in all browsers except IE 8. The sliderEntry demo can not be properly accessed in IE 8 due to the following js popup error. This was not an issue with icefaces libs taken from Jenkins build 1539, r46090

Message: Object doesn't support this property or method
Line: 1805
Char: 1
Code: 0
URI: http://10.18.39.134:8080/sliderEntry/javax.faces.resource/bridge-support.js.jsf?ln=ice.core&v=4_1_0_151020

It seems unlikely that this new issue could've caused by the most recent fix, since it consisted only of adding CSS settings and the error occurs in a bridge resource. Please try testing using one revision before the fix (r46106) to see if it's related to this fix or not.

I have discovered that this js popup error appears to be occurring also when other components are tested using IE 8 and is not exclusive to sliderEntry. ICE-10817 was opened for this issue.

Showcase demos have been added for slider > Label Position (r46300) and themeSelect > Label Position (r46307).