Fix some minor coverity warnings. Fix a bug in pcad2kicad plugin. Scripting: map BASE_SET. Rename some python bom scripts with better names. Fix erroneous comments and add comments

Eeschema: Fix a (minor but annoying) bug detected by coverity which prevent Eeschema to draw components in "fast mode" (i;e. without pin texts) when they are moved, due to a draw parameter which was incorrectly used.
Move items rework: enhancements: for some items (sheets, components, bus entries) the mouse cursor is no more wrapped to the anchor. For large symbols, this is better: they are more easy to place.
There is also a change when starting a move item command: the full screen is redraw, and therefore there is no artifact due to the XOR draw mode.
Some other minor coverity fixes (uninitialized members).

Fix some coverity warnings (not initialized members). Add comments. Better (more informative) title in dialog to download .pretty libs.

Fix someminor  coverity warning, and one bug found by coverity in drill report files : buried holes were not properly counted and listed.

* move not shared files (sch_item_struct.*, sch_base_frame.h) to eeschema;
* move wxEeschemaStruct.h to eeschema and rename it schframe.h to be consistent with the other corresponding file name schframe.cpp;
* remove few not needed  #include

Pcbnew: fix bug  #142348 (airwire does not always appear after deleting a track). Very minor other fixes.

- changes comment number and value from nodes to attibutes
- UPdate bom_with_title_block_2_csv to use the changes made for sheet and comment

Rename eeschema/dialogs/dialog_sch_find.fbp to dialog_schematic_find_base.fbp, to be consistent with other dialogs. 
Pcbnew run from the project manager: add menu Save Copy As..., which is the same command as Save As ... in stand alone mode, but with the constraints of a project (no cwd change, no board filename change, and keep project settings)

- update bom_with_title_block_2_csv.xsl

- the net file now has all project sheet title block using node 'sheets' and 'sheet'
- Updated bom_with_title_block_2_csv. Note, its only going to output the root title block.

- corrected the code that violated the code policy. i.e. added the extra space to make the code more readable
- Restored bom2csv.xsl to its original form 
- Added bom_with_title_block_2_csv.xsl which has the new BOM generator.

-update XNODE* NETLIST_EXPORT_TOOL::makeGenericDesignHeader() so that the net file now outputs project information.
    For example:
        - Company name
        - Project title
        - issue date
        - Revision
        - Comment 1 to 4

- updated bom2csv.xsl plugin to take advatage of the extra project information that the net file now outputs.

Overall this improvement will make it easier to automatically make controlled and traceable documents.

Dialogs edit footprint in module editor and edit footprint in board editor: add button to edit the selected 3D shape filename.
Dialog edit component in library editor: add button to edit the selected footprint filter.

* Fix -Woverloaded-virtual warning in DIALOG_LIB_NEW_COMPONENT class
  definition.
* Make EDA_ITEM::Matches( const wxString& wxFindReplaceData& ) protected
  since it's a helper function that should only be called by derived objects.

* Check to see if image handler is already initialized to prevent warning
  on debug builds.
* Change LIB_PART destructor message output to use wxLogDebug for debugging
  on windows builds.
* Minor code cleaning and coding policy fixes.

Fix minor aesthetic issues in dialogs (these minor issues (overlapping widgets)  exit only with some Windows managers like KDE)

Eeschema: fix a minor bug and enhances SCH_MARHER::Matches function (  partial use of  0005-SCH_MARKER-fix-a-Woverloaded-virtual.patch, from <fatzer2@gmail.com> ) and other very minor fix.

Very minor fixes: add missing const return type to some GetBoundingBox() declarations. Change few functions names to better names in some places (like GetName() to GetPinName() )