Bug 12535 - PROG/CCSR Deprecation: Make opac translation theme independent

Bug 12535 - PROG/CCSR Deprecation: Make opac translation theme independent

This patch makes opac translation files theme independent
A side effect is that current prog translation file is
renamed.

But the renaming is not added, that gives a patch of ~60M!

Current list of languages are now obtained from pref files.

To test:
1) Apply the patch

2) For your preferred language, rename opac prog file
from 'xx-YY-i-opac-t-prog-v-3006000.po' to 'xx-YY-opac-prog.po'

3) Update that language, there must be no errors
cd misc/translation
./translate update xx-YY [-v]
Check updated po files

4) Install any language, there must be no errors
./translate install xx-YY
Check prog theme for that language

5) Create translation files. Remove a language or create new lang files
./translate create zz-WW
ls -l po/zz-WW*po
check there are 3 files (and *~) for opac

6) Check updated pod for LangInstaler.pm and translate script

When PROG/CCSR themes are removed, I'll add a Bug to remove
corresponding files.

Perhaps RM could add a followup to rename all files,
cd misc/translator/po
for old in $(ls *opac-t*); do
    new=$(echo $old | sed 's/-i-opac-t-prog-v-3006000/-opac-prog/');
    git mv $old $new;
done

Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Works as described, no problems found.

Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>