IP address annotation (clickable modal window/href) in the show bgp
ipv4/6 unicas <prefix> output added.

In future it should be linked via decorator_helper to whois client /
DNS resolver to give more meaningful explanation of observed network
topology.

Fix condition when the CiscoCommandShowBgpIPv46Select.decorateResult()
hits the end of the result array/file and the e index falls beyond the
end which causes exception.

Also prepare Cisco for decorators of show bgp ipv4/6 commands.

Bugfix situation when listing slice is cut from text in session result
file it may happen that multi-line result is cut apart on listing
boundary which causes errors in table generation function of sh bgp
ipv4/6 unicast neigh <ip> received-routes and simmilar (handled by the
same shared code) commands. The errors actually means that there is
incomplete records because the cut part is missing (it might be
beginning of the first record or the end of the last record).

Also URL generation for modal windows was simplified.

Refactor URL generation aparatus in decorator_helper to simplify linking
modal windows.

Bugfix BIRD graph parameters unwanted spreading/copying.

Slightly refactor the BIRD config and RT table parser.
Graph bindings are based on but less complicated than Cisco ones.

Refactor bgp_graph_gen function and subfunctions.
Add sh bgp ipv6 uni command with BGP graph decorator.
Add label escaping and vertex ID transformation in order to avoid
forbidden colons in the vertex ID. The colon char is a separator of values
in the pydot interface or so.

Rework parameter passing from
(result,router=0,decorator_helper,resrange,...) to more compresehnsive
version (session,decorator_helper). The session contains or should
contain all the parameters needed but there is a certain indirection
because session is being defined later in ulg.py. The rationale is that
even thouhg ulg.py can no be imported into files containing decorators
it is stable part of the ULG and therefore it might be used for building
decorators based on classes defined there (even though the classes are
not directly accessible, which can be overcomed by passing instances or
using decorator_helper to do needed class instantiation.

Modules for BIRD as well as Cisco has been changed to reflect this
changes.

Fix some woes in Cisco regexps.
Fix minor display bugs.

RT table selection support added to commands
show route table <RT> for <IP>
show route table <RT> protocol <peer>
show route table <RT> all for <IP>

Multiple fixes into BIRD decorators added.
Added show route for ... and show route all for ... commands.

Lot of things has to be reworked in order to introduce range display of
large results (it should have been take into account in the beginning)...

(But the decorator is dead slow:-( )

When the result was None the len() caused exception.

Code scope changed - it was wrong and running directly outside
of a new thread would cause Exception.

ULGmodel, Cisco and BIRD support changed in order to support sync
as well as async commands (async = command result is displayed
in the same time when the command is running).

Error handling returned from BIRD scatched.

Added commands show memory, show status and show route all ... .
Refactored last lined (end of output) test and runRawCommand() funct.

It reflects reality better though this change expects the user to
change the name by himself. Configuration twaked accordingly.

(It would not work with the previous ulg import which is a great
inconvininece for eventual users.)

Minor refactorization of decorators.
Router-wide as well as command-specific filters for protocol types added.

Added show route protocol ... command.
Added show route export ... command.
Refactored show protocols all ... command.

Support for BGP peers selection added.
New command implemented by a class BirdShowProtocolsAll added.

BIRD show protocols command parser and table formater added.

Table formatting helper added errornous <DOCTYPE ...> tag
in the beginning of the table. Removed.

Raw I/O for BIRD implemented (inspiration taken from client.c of BIRD).

Bugfixes and more debug added to command thread body.

ULG cron now check age of sessions and deletes only sessions
older than 1 hour.