on RHEL-6

In the interest of speeding up comparisons, let
TimeSeriesProperty check for equality against a generic
Property and do the casting check.

1. Remove a do-nothing "else if" line 833;
2. Enable 'create' to check whether the series is sorted;

1. Add a case in addValue to switch from unknown to unsorted;
2. Fixed an indentation issue.

used m_values.back() instead of first *m_values.rbegin() at line 840;
removed the outdated comment at line 1182;

Refs #9059

This seems more reasonable as thats what really happens.
Refs #9045

Mainly removed Poco includes and used forward declarations instead.
Unsuprisingly this has affected some algorithms.
Refs #8784

Many things here could be forward declared so that the headers don't
propagate through the code.
The MaskedProperty implementations have been moved to the cpp file to
help with this.
Refs #8784

Removing some instances where i was writing to the console so i could see the QStrings i was working with.

Corrected a spelling in a similar command i haddn't added.

Graph titles are now the workspace + log name rather than the secion of the log name before the first underscore.

Fixed an out of bounds check that was revealed after fixing the issure Martyn highlighted.

This will modify a TimeSeriesProperty to keep only the last entry. Note
that 'last' means the last added, unless the property has been sorted
first.