Finish latest merge. Oops.
CakePHP 1.3: fix form button label.
CakePHP 1.3: fixed forms.

Some input()s were mistankly generated as selects instead of text
fields by the Form helper.
CakePHP 1.3: fixed form CSS.

Some form fields got a different id in 1.3.
Fixed 'Undefined index: id' on tag save.

I assume the tag_id field was mistakenly flagged as auto_increment
because we always set it on record creation and it makes no sense.

This warning is produced when calling TagsSentences->add() because the
TagsSentences model doesn’t have a single-field primary key. Instead we
use a composite primary key (tag_id,sentence_id).
However (quoting Cakebook [1]):

> All tables with which CakePHP models interact (with the exception of
> join tables), require a singular primary key to uniquely identify
> each row. If you wish to model a table which does not have a
> single-field primary key, CakePHP’s convention is that a single-field
> primary key is added to the table. You have to add a single-field
> primary key if you want to use that table’s model.

[1] http://book.cakephp.org/1.3/en/The-Manual/Basic-Principles-of-CakePHP/CakePHP-Conventions.html