Appearance: Added BSpinners for setting font sizes.

Change-Id: Ic8036e512cda3e30b653092fa718b03e1b042ecc
Reviewed-on: https://review.haiku-os.org/710
Reviewed-by: Kacper Kasper <kacperkasper@gmail.com>

preferences: Convert to using Set*UIColor.

Signed-off-by: Augustin Cavalier <waddlesplash@gmail.com>
Patches 0023-0037 from looncraz, unmodified.

Improve/fix tab view layout as discussed

See http://www.freelists.org/post/haiku-development/Unifying-visuals-of-BTabView-usage

Besides the tab bar going the full width of the window, also some
layouting tweaks to several apps and prefs.

Still missing: the first (and last) tabs in the tab bar should be inset by
B_USE_WINDOW_SPACING so the controls in the tab view line up nicely.
I think I remember stippi wanting to look into it... :)

More catalog-related cleanup.

* rename B_TRANSLATE_CONTEXT to B_TRANSLATION_CONTEXT and
B_TRANSLATE_WITH_CONTEXT to B_TRANSLATE_CONTEXT, squashing a TODO
* adjust all uses of both macros in Haiku's source tree
* use correct header guard for collecting/Catalog.h

The renamed macros require adjustments to all external applications
using catalogs.

Embedded the Font into the Appearance Preflet

* Copied the essential parts from the Font preflet into the Appearance
preflet folder.
* Adopted these files to better direct where BMessage arrive and why.
The Font preflet just forwarded them from the BWindow handler,
which was quite messy.
* Embedded the Font preferences as another tab. The first one actually,
with the Decor settings also moved in front of the Anti-Aliasing tab.
* Refactored the Defaults and Revert button updates in the window code.
* AInclude all active settings tabs in the Defaults and Revert handling
for consistency. But eventually, the buttons should only affect the
currently visible page.

More catalog-related cleanup.

* rename B_TRANSLATE_CONTEXT to B_TRANSLATION_CONTEXT and
B_TRANSLATE_WITH_CONTEXT to B_TRANSLATE_CONTEXT, squashing a TODO
* adjust all uses of both macros in Haiku's source tree
* use correct header guard for collecting/Catalog.h

The renamed macros require adjustments to all external applications
using catalogs.

Embedded the Font into the Appearance Preflet

* Copied the essential parts from the Font preflet into the Appearance
preflet folder.
* Adopted these files to better direct where BMessage arrive and why.
The Font preflet just forwarded them from the BWindow handler,
which was quite messy.
* Embedded the Font preferences as another tab. The first one actually,
with the Decor settings also moved in front of the Anti-Aliasing tab.
* Refactored the Defaults and Revert button updates in the window code.
* AInclude all active settings tabs in the Defaults and Revert handling
for consistency. But eventually, the buttons should only affect the
currently visible page.