Fix for issue 217 - Tighten the scope of the on click event for the "show parents" buttons

Same for "statistics" buttons

As filter buttons are now within the table the on click event for them can also be parented on the table
Individual lists - filter by death not working
Families list - divorce filter not working
Merge pull request #220 from ddrury/Issue217fix

Fix for issue 217
Global Javascript variables should be local
Fix broken display when changes pending. eg. favourites block when pending change is to one of the displayed facts

Removed ".block .old" & ".block .new" classes
Remove I18N debug tool.
Merge pull request #221 from ddrury/CSSfix

Fix broken display when changes pending.
Error in error message when merging non-existant records
#1340440 - Mail from site to administrator is in unexpected language
Import classes, per PSR autoloading standards
Code without side-effects (see PSR-1) does not require guard headers
Sync submodule.
Import classes, per PSR autoloading standards - following webtrees base
Sync submodules.
Merge remote-tracking branch 'webtrees-base/master' into develop
Code without side-effects (see PSR-1) does not require guard headers
Sync submodules