[tools] Phyton-based Airframe File Editor

Squashed commit of the following:

commit 67afebebdf3a2743b6c97ebac1a267c16aeff9b6
Author: Felix Ruess <felix.ruess@gmail.com>
Date:   Mon Sep 30 18:02:23 2013 +0200

    [tools] airframe editor: minor fixes and pep8

commit f7ea77c13ea6d9df89afc098d033dae88d876b7d
Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Tue Mar 5 17:41:22 2013 +0100

    New Group identification tag

commit 0c20d2824ec4739954e7ee6930ec9c99966683fa
Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Tue Mar 5 16:28:47 2013 +0100

    Delete old grouping tags to avoid growing in time

commit 43902b8810711dba167c87fc9c35babc9c833a31
Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Tue Mar 5 16:01:09 2013 +0100

    Better xml loading error handling

commit a2590591708787fa2ba13b69dc8f64ea932d5979
Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Tue Mar 5 14:13:28 2013 +0100

    Run xml_airframe standalone for batch conversions

commit 1092bf0db9785e9434e41a69a460e6e00a19e81e
Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Tue Mar 5 14:07:48 2013 +0100

    Save DTD path and initial comment from airframe.xml

commit bf2a10603e20a66d7de3f6a097a4c5f091695047
Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Tue Mar 5 10:12:15 2013 +0100

    Do not forget airframe name

commit 44ddc63a181219c74e9a25d4c3a2a6a1e96acdb8
Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Fri Feb 15 16:28:48 2013 +0100

    Commenting change in airframe

commit 172724335a78abd140f442518857e65a46e5ed97
Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Fri Feb 15 16:26:26 2013 +0100

    XML Structure

commit 15e6cc8daf05b00d64b93f86a1b1322d991fffad
Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Fri Feb 15 09:26:12 2013 +0100

    MenuBar

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Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Thu Feb 14 22:39:11 2013 +0100

    auto-grep

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Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Wed Feb 13 21:55:21 2013 +0100

    Search for defines

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Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Wed Feb 13 20:35:23 2013 +0100

    Show section content - editable

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Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Wed Feb 13 18:54:26 2013 +0100

    Boards

commit 97ebb81240795ba4740018f17fc31e9a695111db
Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Wed Feb 13 17:53:35 2013 +0100

    Finally Fixed XML Output

commit b27ddfb401abf8c7aa81770db9f0410ab66da27f
Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Wed Feb 13 16:25:38 2013 +0100

    Better Size Management

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Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Wed Feb 13 07:54:12 2013 +0100

    Rename

commit 129bdda836b8d7d3064f7b79e54a7cae8a29bae9
Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Wed Feb 13 02:16:14 2013 +0100

    Generate Nice and Grouped XML

commit b6fc1f53ade5fc7f0e6b6cdadc9d07ab1307c414
Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Wed Feb 13 01:24:22 2013 +0100

    Editor Update

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Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Wed Feb 13 00:28:34 2013 +0100

    Restructure

commit abcaedb90ae5f3de1ea520e354337008c06f3db2
Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Tue Feb 12 18:48:13 2013 +0100

    Automatic Airframe Re-Origanization

commit 2faeb74a7d604d3a07b647692737af063bf9e2f6
Author: Felix Ruess <felix.ruess@gmail.com>
Date:   Tue Feb 12 17:40:38 2013 +0100

    fix typo

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Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Tue Feb 12 16:54:17 2013 +0100

    Pretty Print

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Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Tue Feb 12 15:38:19 2013 +0100

    Open Files

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Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Tue Feb 12 14:54:45 2013 +0100

    Open File

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Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Tue Feb 12 14:47:15 2013 +0100

    Cleanup

commit 6d7aeef7bf31e7c05738d8ccd90e91468bae24db
Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Tue Feb 12 14:29:33 2013 +0100

    Grouped paparazzi

commit 2ec961acd51fd64337697152c92f49b82c560048
Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Tue Feb 12 13:29:32 2013 +0100

    paparazzi.py

commit d0cb88cbbb7dc763d5a5545948c494fcad906b26
Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Tue Feb 12 10:10:57 2013 +0100

    Attempt to add comments in xml

commit c10455d93e700438c91e34198d96bda5791d5aa9
Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Tue Feb 12 10:10:33 2013 +0100

    Paparazzi-Common

commit 74214985f45b4c590af3702c2ec6a9e351b45895
Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Tue Feb 12 09:54:15 2013 +0100

    Rename for Clarity

commit 8ce5ecbd2477dffba9c06ca8e51357e83783aaef
Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Tue Feb 12 09:48:54 2013 +0100

    Module for gui stuff

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Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Tue Feb 12 09:12:26 2013 +0100

    Read SubBlocks

commit f166629579088fb905dfdfdfcc52632c524eb506
Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Mon Feb 11 23:15:33 2013 +0100

    DataGrid

commit ab06a1e1f6a50aaa1fe92109993fe3ea80ba3cdb
Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Mon Feb 11 21:59:50 2013 +0100

    Solve Merge Errors

commit 90e3f626ad46657ebc9720e15de8b39e327afeea
Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Mon Feb 11 21:27:52 2013 +0100

    TreeView

commit 730cb7960d9c291ec3a9a2cdd3d05606c0d7c2b7
Author: Felix Ruess <felix.ruess@gmail.com>
Date:   Mon Feb 11 19:02:42 2013 +0100

    get paparazzi_home from env, indentation 4spaces as in pep8

commit 2df5c4c972ec994fe3d42810e26c3b4166acc381
Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Mon Feb 11 17:49:50 2013 +0100

    Airframe Editor

commit f71e2dd434121ecc16dbd2c682e1b6f89281388b
Author: Christophe De Wagter <dewagter@gmail.com>
Date:   Mon Feb 11 15:55:02 2013 +0100

    Phyton-based Airframe File Editor