Bug 11885: (follow-up) make default styling consistent with previous look

Bug 11885: (follow-up) make default styling consistent with previous look

Jonathan Druart raised the following three issues:
1/ subtags was bold before patch
2/ 1 dash existed between tag and tag name
3/ A space has been added ("606 #1 - Sujet nom commun"
    becomes "606 # 1 Sujet nom commun",  "101 ## - Langue"
    becomes "101 # # Langue")

This patch addresses them in the following way:
1/ You will note that @ was not bold on the 0 tab.
   Every other tab were bold. By making the similar template
   into a procedure based on the 0XX tab, bolding was lost.
   This patch bolds all subtags including the @, so that
   the visible change is minimized.
2/ The dash was programmatically added in at the code stage
   previously. This bug fix splits the the single concatenation
   mess into parts which can be styled. This puts the dash back
   into the template. However, it should be noted that the
   spacing for the 0 tab's tag and tag description will have an
   extra space after the hypen that was lacking before.
3/ <span>...</span><span>...</span> is different than
   <span>...</span>
   <span>...</span>
   The later puts that extra space. This patch fixes that.

See comment 1 for the test plan.

Signed-off-by: Bernardo Gonzalez Kriegel <bgkriegel@gmail.com>
Work as described.
Small koha-qa errors fixed in followup

Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>
(cherry picked from commit 377dbfc73fb2a06b8a0d50731e2c8ba14968d68e)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>