overview of user-guide
rename of the directory
add toc tree for user manual
clean test in _template
mod overview
mod
add
Merge branch 'extract_icon_dir_file' of https://github.com/liuzhaoguo/FreeROI
Merge branch 'master' of github.com:BNUCNL/FreeROI
Merge pull request #36 from liuzhaoguo/move_algorithms_to_tools_box

move algorithms to bottom-left tools box.
HLJ: Well done!
Merge pull request #37 from liuzhaoguo/move_algorithms_to_tools_box

the y_coordinate of region growing match the display
[ADD] add new function `get_data_icon` and update freeroi
Merge pull request #38 from sealhuang/master

[ADD] add new function `get_data_icon` and update freeroi
PEP8
Merge pull request #39 from xtao/pep8

PEP8 corrected.
Merge branch 'master' of github.com:BNUCNL/FreeROI
Merge pull request #40 from liuzhaoguo/move_algorithms_to_tools_box

optimization region growing
Add basic tab and move some functions to it. .
Add basic tab and move some functions to it. .
Merge branch 'master' of github.com:BNUCNL/FreeROI

Conflicts:
	froi/gui/component/listwidget.py