HTML validation
Update edit_interface.php

Added missing global. You should get rid of the global stuff, maybe using Zend_Registry
Merge pull request #257 from magicsunday/patch-1

Update edit_interface.php
Fix: DB error in error checker
Fix #259 - block editor gives fatal error
Add menu options to merge and renumber trees
Fix: #1379482 - Monthly Calender Day not set box has vanished
Update .PO files. Fix some minor English grammar.
The next release will be 1.6.0
Upgrade datatables from 1.10.0 to 1.10.3
Makefile - fix for cygwin fails on linux.  Prefer linux.
New responsive/accessible admin theme - using bootstrap