Bub fix: adding empty string to int type field

This fails sometimes depending upon mysql confs
No outgoing X-Forwarded-For in DAS.
Removed 'genome' tab as basic site doesn't have this content (full list moved to public-plugins/ensembl)
Added a more thorough check that the database contains LRG seq regions (caused a minor issue on human pre)
Changing upload limit
Bug fix: textarea tag was not closed properly
Fix zMenu location maths for unlucky rounding.
Fix for hard-coded domain logic names
A few small tweaks to make pre happy!
Big fix: Submenu clones invalid nodes sometimes

See RT 392043 for details
Error messages contains strand if track is missing
ExtIndex not being used
Merge branch 'master' into feature/tools-dev