RPC, VOOT: bumped voot support to latest SVN version

VOOT:

- Updated perun-voot project to latest SVN version.
- Removed unnecessary comments on start of each file.
- Removed "@version $Id: $" since not used in GIT.
- Fixed some javadoc typos.

RPC:

- Added dependency on perun-voot module.
- Access VOOT class from ApiCaller.
- Updated Api to handle voot (thou parameter in URL
  seems to be passed as manager, not the protocol).
- Changed readAll() in UrlDeserializer to split items
  by comma and not whitespace (used when processing VOOT).
RPC: fixed splitting of URL

- Split path part of URL with limit 3 instead of 4 since
  VOOT uses more "/" in URL to split method call parameters.
RPC: Fixed JsonSerializer implementation

- Do not serialize userExtSources property of Candidate.
  Was set on "getDeserializationConfig()" which was
  probably typo and caused sending of unnecessary data with
  object (same data is in userExtSource and
  additionalUserExtSources properties).

- Fixed serialization of PerunException, since it contained
  unnecessary properties like: localizedMessage & stackTrace.

- Applied Java source formating, optimized imports.
RPC, VOOT: small unification fixes

RPC:

- Fixed typos in JsonSerializer.
- Added ignore for userExtSources of Candidate.

VOOT:

- Fixed typos, removed unnecessary comments.
- Deleted unused classes forgotten from previous version.
RPC: changed URL /json/voot/ to /voot/vootManager/

- Changed URL structure for voot in RPC to respect:
  [base_url]/[authz]/[perun_component]/[data_format]/[manager]/[method]

- VOOT uses UrlDeserializer for input (ignore POST call's content)
  and JsonSerializer for output.
APPS: added mailinglist-manager mini app

- Initial commit of perun-apps project with mailing-list manager app.
- Added README.md with some info about apps.

Common files for all miniapps will come later after some cleanup.
APPS: added common files for miniapps

 - Added common resources files for all miniapps
 - Updated Readme.md
Merge pull request #196 from zlamalp/miniapps

APPS: initial version of Perun's mini-apps project
Merge pull request #189 from zlamalp/voot

VOOT, RPC: bumped voot to lastest version from SVN