move ftools utils to tools utils module
[Processing] added GRASS m.cogo
[processing] refactoring to move common functions to tools package
[processing] Added schema parameter to ImportIntoPostGIS.py
[processing] added progress display in qgsMessageBar
[processing] improved non-threaded execution
[processing]fixes in saga filename handling
fixed saga buffer description
`processing]improved doc of example algorithm
[processing] fixed minor saga file issue
[processing] added some in-code docs and comments
[processing]fixed bug with wrong characters in output filenames

refactored to reuse string cleaning function
[processing] adapted algorithm to function refactoring

Also set threaded execution to false by default, since it was behaving strangely