fix search link

thanx to @daamian for reporting this, somehow I missed this in SHA1: 24743cb95dca97693f39e2e09a85405ac4e1608

close #6
use msg for config error reporting

in case of a configuration error report that to the admin on screen
instead of some system log.

close #5
report twitter error code and message to any user

this could be things like wrong credentials etc.
see also #5
update translation
Merge pull request #7 from araname/master

update translation
thanx for this
Merge pull request #1 from mprins/master

update
update translation
Merge pull request #8 from araname/master

update translation
French translation
Merge pull request #9 from daamien/master

French translation.
Update lang.php