Fix placement of amplifier fields for land units

Change X and Y values for the AF, T, X and Z text amplifier fields for
land units. Checked against the latest 2525D document.
Fix placement of amplifier field for subsurf. unit

Change Y value for the H amplifier field for subsurface units
Add depth amplifier field for subsurface unit

The subsurface unit is missing the X text amplifier field for depth.
Merge pull request #128 from csmoore/master

Update TestLegacyCodes to use better test dataset
Merge pull request #130 from kjellmf/master

Modify placement of some text amplifier fields for land and subsurface units
Update TestLegacyCodes to use better test dataset

The previous one (SymbolInfo.csv) looked like it had lots of
errors/redundant data, so switched to a better/vetted one.
Fix placement of amplifier fields for land units

Change X and Y values for the AF, T, X and Z text amplifier fields for
land units. Checked against the latest 2525D document.
Fix placement of amplifier field for subsurf. unit

Change Y value for the H amplifier field for subsurface units
Add depth amplifier field for subsurface unit

The subsurface unit is missing the X text amplifier field for depth.
Updated svg database and simplified OCA

Latest SVG files
Reduced the number of operational condition amplifier icons.  They now
adhere to the four Standard Identity Groups (U, F, N, H).
Merge pull request #134 from abouffard/master

Amplifier field fixes, test data, and new SVG files
Latest SVG files, individually tracked
Merge pull request #137 from abouffard/master

Latest SVG files, individually tracked
Added support for custom tags

Custom user tags can be embedded in XML
Custom export tags can be configured purely for exported csv data use
Implemented Esri CIM geometry exception tags in the relevant control
measures
Removed errant OCA entries from export
Updates on some svg files provided by DISA
Merge pull request #138 from abouffard/master

Added support for custom tags