Phylotree description update

[almasaeed2010]

Feature description

Our little Phylotree loader module (https://github.com/statonlab/phylotree_loader_cmd) allows users to run a drush command to load all phylotrees in a directory. It automatically adds a title and appends the file as a description in the page. We want to extract the feature cvterms and add them to the description under the file.

1. Once the loader finishes loading a tree, grab it's ID (note that tree names are unique so you can search by name).
2. Chado has a table (something along the lines of phylotreee_node) that has a feature_id linking each feature in the tree to the tree. By grabbing these feeatures we can get all their cvterms.
3. Presentation: Only unique cv terms should be presented. If possible, they should be linked to the cvterm page. For easy scanning, the cvterms should be in a table:

Controlled Vocabulary	Term	Description
chado.cv.name	chado.cvterm.name	chado.cvterm.description

Note that that this table should go to chado.phylotree.comment table.

Link to relevant info