[%# html/button: simple text button with a link like "[ this ]"
# ARGS:
# text # button text
# link # button link url
# select # flag to select item (set bold)
# left # flag to add left arrow head (e.g. prev. item)
# right # flag to add right arrow head (e.g. next item)
%]
[%- '<-' IF left %]
[%- select ? '[<b>' : '[' -%]
[%- IF link %]<a href="[% link %]">[% END %]
[%- text | replace('\s', ' ') %]
[%- IF link %]</a>[% END -%]
[%- select ? '</b>]' : ']' %]
[%- '->' IF right -%]