apply constraints to names for tasks and task instances in resource configuration

The same rules as for IEC identifiers are applied.
- no non-lating characters, ...
- no IEC keywords
- check for duplicate names in resource configuration

closes #19

Fix russian translation

Merged skvorl/beremiz into default

add stretching to columns Name, Type, Doc in variable panel

fix SFC Step flush method

fix redraw debug instance tab after transferring new build to PLC. closes #15

1. Deleted .directory file, and added it to .hgignore.
2. Added russian locale .mo file.

Fix russian translation

Merge

Safe

broken code is temporarily blocked
This code used to highlight with green color text in upper-left corner (path to current instance) in debug mode, if current instance active. Only SFC actions are affected. #16

fix exception handling
now only one exception dialog is displayed, if many same type exceptions handled (like in #16), and bug reports files always save after exception, not only after pressing "OK" button in exception dialog, closes #17

change directory for saving Beremiz bug reports from current working directory to TEMP directory.

Correct element size, if block type or variable name is wider than block width.
Previously, if size corrected, element changed position to the right (or down, if height is corrected). Now upper-left corner is fixed.

remove non-existed and not necessary self.logger from detecting options in iec2c

remove Linux target from first_steps example

Then default target on the system will be used.

1.2rc1

closing 1.1 branch

for tests svgui and logging move code from old py_ext.xml to the new pyfile.xml

merge

fix IL jumps highlighting in Text Viewer

change white background for icons in PouInstanceVariablePanel to transparent

in wxPython 2.8 panel has white background and therefore white
background is appropriate, but in wxPython 3.0 panel has grey
background (on GNU/Linux and on Windows).
Transparent background looks good on both wxPython versions and on all platforms.

change white background for project tree element to transparent

because on GNU/Linux project tree has grey background, therefore
white background looks not good.

fix second error message in case of error appearing too early to have a wx frame

fix a side effect of 95ecb26fdc4e

remove old unused .cvsignore

fix issue with printing scheme (FBD, LD or SFC) with comment element on GNU/Linux

If you draw FBD scheme and place comment on it and then try to print
it, then no wires will be printed and comment box is empty (text is
missing). This happens only for wx.PrinterDC and not on wx.MemoryDC
that is used to draw print preview window in Beremiz IDE.
Looks like a bug in wxPython or wxWidgets.

There were found several workaround for this issue.
1) If some dc.DrawLines call is placed before dc.DrawPolygon, then the
problem is gone.

...
dc.DrawLines(polygon)
dc.DrawPolygon(polygon)
...

2) Reseting DC brush solves the problem as well (see this changeset).

detect iec2c options and ieclib path only once during the first build

attach checkedBlockDict variable to the body object

fix file header in AboutDialog.py