1.7.5
* User manual aligned with plugin's version 1.7.5
* User manual produced via sphinx (html and pdf)
* Add "What's this" to plugin's toolbar buttons, pointing to specific html help
pages
* Fix memory leak in weighting dialog
* Fix corner case in tracking transformed fields when transformation can not be
completed
* Set transformed field names automatically to _ORIGNAME instead of T_ORIGNAME
(names up to 9 characters will not be truncated by the max 10 characters
constraint of shapefiles)
* Do not lose the modified project definition while on-the-fly index calculation
is disabled and
Ok is pressed
* Show informative messages in the messageBar during field transformations and
index calculations
