autoload plugin namespace

Remove unnecessary linebreaks from new Form

Fix caching issue in wikiFN

Allow true/false for onoff config setting

preg_replace eval modifier

See #1551

Changed the values recognized by the general config parser.
If value in config is a boolean it is recognized as boolean, not if it
is a string.

Fixes #718

Since Firebug it is no longer necessary to structure html with linebreaks. See also Issue #924

as pointed out in
https://github.com/splitbrain/dokuwiki/pull/1530/files/b89dfc20f1e13333ce49ce0d6a3a83cc9836094b#r60392099

Caching must differentiate between a call with $ascii == true and a call
without that parameter. Since calling that function with $ascii == true
rare, we simply do not cache that case.

Remove support for 'disabled' in plugin folder

This `$conf['pluginmanager']` setting was especially for disabling of
pluginmanager in farms. (see also commit c45608df )

remaining folders with .disabled in the foldername are displayed in
extension manager with rename warning.

The opera work around is still needed though! O_o

Standardized node.textContent is available since IE9

Remove old browser support

Our minimum PHP version requirement is now over 5.3, so this workaround is
not needed anymore. See also c9454ee3

Translation update (fr)

Close #1323

Add generic 3way merge capability

Show change of file sizes in the revision log

add rel=noopener to links opening in new window

The function wikiFN effectively takes the $clean flag now into account when
caching filepaths and when returning them from cache.

Fixes #1536

Textareas use CRLF, but internally we use LF.