Use wider letter-spacing in name on profile

A letter-spacing of -2px looks great on page titles, but makes profile
names look a bit too tight and somewhat out of place.
fix bug 915063 - Changing see also case, enforcing link colors
Make Demo Studio links appear over spotlight image

Fixes this bug:
https://twitter.com/johnkreitlow/status/380344466512437248
Do not display zone image over zone subnav
Add margin-bottom to all content tables

Some tables, such as the one appearing on the "Where is Mozilla" page,
were not getting margin-bottoms because the property was only applied to
.text-content (wiki) tables.
Fix bug 936636: Remove "Page" from search buttons
fix bug 928302, 929373, 931412 - Check if the search index entry of a wiki document should really be updated during saving or deleting.

This fixes the problem of accidentally indexing wiki documents which  
aren't supposed to be index when saving or deleting them.
Basic stylus cleanup
Cut the footer height by half
rate limit ES index task
Merge pull request #1624 from openjck/next-previous

Fix bug 936636: Remove "Page" from search buttons
Merge pull request #1625 from openjck/profile-letter-spacing

Use wider letter-spacing in name on profile
Merge pull request #1626 from darkwing/see-also-case-915063

fix bug 915063 - Changing see also case, enforcing link colors
Merge pull request #1628 from openjck/derby-links-clickable

Make Demo Studio links appear over spotlight image
Merge pull request #1629 from openjck/zone-image-z

Do not display zone image over zone subnav
Merge pull request #1630 from openjck/table-margin-bottom

Add margin-bottom to all content tables
Merge pull request #1632 from darkwing/stylus-cleanup-more

Basic stylus cleanup
Merge pull request #1633 from darkwing/footer-height-squeeze

Cut the footer height by half
Merge pull request #1627 from groovecoder/rate-limit-search

rate limit ES index task
Merge pull request #1631 from jezdez/improved-indexables-928302

fix bug 928302, 929373, 931412 - Check if the search index entry of a wiki document should really be updated during saving or deleting.