Fixes sqlmapproject#2511

Implementation for an Issue sqlmapproject#1895

Adding option --web-root (Issue sqlmapproject#2419)

Update for sqlmapproject#2378

New version preparation

Adding new tamper script plus2concat (thank you Luka Pusic)

Patch related to sqlmapproject#2257

Proper form for excluded case in escaper

Version string bug fix

Preparing for sqlmapproject#1250