added option to enable automatic popularity data in installer
de/de-informal: language updates / added "sidebar"
Merge pull request #150 from lupo49/master

de/de-informal: language updates / added "sidebar"
changed popularity link
Merge pull request #149 from splitbrain/installer

added option to enable automatic popularity data in installer
added  to version info if version is unknown
fixed broken @author link in farm code
Made auth_aclcheck always return int

The returned type is important in particular when we deal with xmlrpc. Indeed,
this value is directly returned to the client eg when the wiki.getAllPages method
is queried.

Currently the 'perms' attribute may be either an int or a string, and its up to
the xmlrpc client to resolve it (although Dokuwiki's documentation only tells it
can be an int).

This patch makes sure we'll always return perms as int.
Made xmlrpc putPage and appendPage consistent with documentation

According to dokuwiki's documentation (https://www.dokuwiki.org/devel:xmlrpc#wikiputpage),
those methods should return booleans, not int.
Fixed declared returned type
Merge pull request #151 from gturri/master

xmlrpc putPage and appendPage should return bool
Arabic language update
Merge pull request #153 from gturri/xmlrpcPerms

Made auth_aclcheck always return int
Merge pull request #148 from michitux/indexer

Indexer: Add the PID to INDEXER_PAGE_ADD and add getPID/getPageFromPID functions
allow template unit tests
Traditional Chinese language update
show filesize of local file links in tooltip
Fix content of pages with incorrect metadata in list feeds

Before this change the last modification time was taken from metadata
and then the revision that was specified there was loaded from the
attic. Now revisions from attic are only loaded when the page has been
modified more recently and the date is normally the last modification
time of the page source. This was a problem when the most recent change
was an external edit, then an older revision was shown in the feed.
grayscaled some interwiki icons
Catalan language update