Accept some new gTLD e-Mail addresses

by allowing longer TLDs (up to 63 characters, which is the DN maximum: https://tools.ietf.org/html/rfc1034):
"Each node has a label, which is zero to 63 octets in length."

For an up-to-date-length, see http://stackoverflow.com/a/22038535
translation update
Merge pull request #910 from dokuwiki-translate/lang_update_77

Translation update (cs)
translation update
translation update
Merge pull request #913 from dokuwiki-translate/lang_update_86

Translation update (de)
Merge pull request #912 from dokuwiki-translate/lang_update_85

Translation update (zh-tw)
Merge pull request #907 from Rillke/master

Accept some new gTLD e-Mail addresses
Move check after libraries are loaded, so that $conf['compression'] is not turned off in the case that gzopen doesn't exist while gzopen64 does exist, as inc/compatibility.php ought to have fixed.
Merge pull request #917 from danny0838/master

Fixed a bug that $conf['compression'] is turned off when gzopen doesn't exist and gzopen64 does exist.
Trim unnecessary / at start of windowssharelink
Merge pull request #926 from micgro42/trimSlashes

Trim unnecessary / at start of windowssharelink
use nav+ul element for "you are here"

As described in the common idioms of the HTML5 spec, mark up navigation as a list inside a `nav` element for better semantics and accessibility.

see:

  * http://www.w3.org/html/wg/drafts/html/master/common-idioms.html#rel-up
  * http://lists.w3.org/Archives/Public/public-html/2013Nov/thread.html#msg6
  * https://dl.dropboxusercontent.com/u/377471/breadcrumb.html

for discussion and background.