misc AI adjustments, primarily some further nerfing of lower aggression AIs

git-svn-id: svn://svn.code.sf.net/p/freeorion/code/trunk@7424 dbd5520b-6a0a-0410-a553-f54834df5b05
Fixed name of SH_ROBOTIC_INTERFACE_SHIELDS part in its effect definition that checks for other ships having the part.

git-svn-id: svn://svn.code.sf.net/p/freeorion/code/trunk@7426 dbd5520b-6a0a-0410-a553-f54834df5b05
Removed unused GG::ListBox and DropDownList reverse iterator interface.

git-svn-id: svn://svn.code.sf.net/p/freeorion/code/trunk@7429 dbd5520b-6a0a-0410-a553-f54834df5b05