* TechDraw: add transactions to multiple commands
* Feed each 'Create Dimension' option to the translation macro
* Call fixSceneDependencies when re-adding dimensions so that it shows up at the right place
ISO 286/14405-1 calls for a plus sign if the limit is positive and a
minus sign if the limit is negative. A zero limit should have neither
a plus nor a minus sign. This commit adds the plus sign.
- left justify tolerances
- use format spec for tolerance == zero
- prevent uncommanded tolerance format changes
- use 'w' format for HoleShaftFit
- allow zero tolerance values for HoleShaftFit
