adding --monoicons option to usage.rst
adding manpages for mirall and owncloud
add creating manpages to CMakeLists
moving generation of manpages to sphinx

--HG--
rename : doc/mirall.1.txt => doc/mirall.1.rst
rename : doc/owncloud.1.txt => doc/owncloud.1.rst
removing asciidoc, now creating manpages via sphinx again
merging from owncloud/master
adding maclocation
moving description of config file and client optinos to own files.

* split usage to three files: usage, conffile, options
* fixing minor typos in mirall.1.rst and owncloud1.rst
* owncloud.1 uses include conffile, options
* mirall.1 uses include conffile, options
* Fixes: #183
fixing typo in mirall.1.rst
Merge pull request #312 from hefee/master

usefull manpages for owncloud and mirall