show tag trace in tag title
fix syntax error in form validator
add tag-it plugin from github.com/aehlke/tag-it

commit 65d6fb4
tag picker with autocompletion

This is an UI enhancement.
Instead of showing tons of tags in one page, show only a text input
with suggestion. A user can quickly find necessary tags by typing
some characters of it.

Removed 'Tag' tab from all pages. Now tag assigning is performed on
'Properties' or 'Edit' tabs.

changes:
Removed saveEntityTags(), renderNewEntityTags(), renderEntityTags(),
    renderEntityTagsPortlet() functions.
    'editRange', 'updIPv4RSP' and 'updateFile' ops switched from
    tableHandler()
       to dedicated functions.
add oddeven_table

this class must replace structures with row_odd, row_even and
calculation of the parity