[aliceVision] Minor bugfixes across the project

[cbentejac]

Description

This PR fixes some minor issues in different parts of the project. Namely:

• In Texturing, a sanity check was erroneously checking the same condition twice instead of two different conditions;
• In Numeric, the divideRoundUp function had no protection against divisions by zero;
• In the Bundle Adjustement, the count of the cameras based on their distance was erroneous when it came to cameras with a distance equal to 0.