Use XUL xmlns instead of prefix in zoterosearch.xml
Fix font size of "any"/"all" line in advanced search window

It was previously larger than the default and didn't obey the font size
pref.
Set maximum with and chars on Name field when editing saved search
Library switcher in advanced search window

When opening the advanced search window, the current library is
selected, and a different library can be selected to change the search
scope. If a library is read-only, the saved search button is disabled.
For saved searches, the appropriate library is selected and the
drop-down is disabled.

Also:

- Close the advanced search window after a search is saved
- The default name for saved searches ("Untitled 2", etc.) was based on
  collections rather than searches
- Once an initial search has been performed, the drop-downs and
  checkboxes now update the results
- More consistent spacing in advanced search window
- (dev) Zotero.DB.getNextName() now takes a libraryID as its first
  parameter instead of always using My Library; the old parameters are
  deprecated but still work
Merge English string