Freshened appearance of forms: new vector font, switched off scaling, resized buttons.

Partial implementation of original issue #12
Replaced list box used to display version info items with a list view that separates headers from content: headers do not respond to double-clicks. This finally resolves issue #12.
Removed redundant code.
Increased size of dialogue box and contents. This affects both "View RC Statements" and "Analysis Errors" dialogue boxes. Fixes issue #7.
Made dialogue box used to edit comments resizable. This also affects string information editor dialogue box. Fixes issue #6.
Increased minimum OS version in installer to 5.1 (Windows XP) since change to UI now means program requires XP as minimum.
Position of caret in string editor memo control is now displayed at top right of dialogue box. Fixes issue #6.
Merge branch 'feature/ui-enhancements' into develop

Conflicts:
	Source/FmMain.dfm
	Source/FmMain.pas

All conflicts resolved by accepting all changes from both develop and feature branch, except that font size in main form taken from feature branch.