distinct URI for suspend/delete

/users/?suspend=<username>  =>  /users/suspend/<username>
/users/?delete=<username>   =>  /users/delete/<username>
added possibility to delete users
added granting/revoking of admin privileges

any admin (username 'admin' or account_type 'admin') can toggle the
account_type of any other non-guest user from 'admin' to 'user' and vice-versa
the "real" admin (username 'admin') is of course unaffected
Merge branch 'master' into usermgmt
reapplied LDAP code to current upstream
setup.py: added 'python-ldap' to install_requires
auth.py: removed some trailing whitespace
renamed ambiguous single letter variable
removed redundant strips. thereby reducing number of function calls
fixed doc strings to reflect new changes
forgot 2 lines in user.py
only display "reset password" link for non-external users
removed redundant strips
undid 1b93d9b583852c7c8e64fd938d02d0d26fc8cbab
only display LDAP settings if python-ldap is installed
Tools for sws2rst
Merge remote-tracking branch 'sagemath/master' into sws2rst
Trac 10637 reviewer patch

More accurate error message if BeautifulSoup is not installed
Mismatched parentheses

Fixes a typo in b64d8938316ce71275f4a2d7d3101c4b601e1127
Version bump to 0.10.0