webapp updates to support v2.0 fastspecfit catalogs

[moustakas]

The web-app is not yet public and will likely require some additional updates but I'd like to get these changes in now.

[coveralls]

Pull Request Test Coverage Report for Build 3895495945

• 0 of 9 (0.0%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 57.898%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
py/fastspecfit/continuum.py	0	4	0.0%
py/fastspecfit/emlines.py	0	5	0.0%
<!--	Total:	0	9	0.0%	-->

Totals
Change from base Build 3842033693:	0.0%
Covered Lines:	2049
Relevant Lines:	3539

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 3895495945

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 0 of 9 (0.0%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 57.898%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
py/fastspecfit/continuum.py	0	4	0.0%
py/fastspecfit/emlines.py	0	5	0.0%
<!--	Total:	0	9	0.0%	-->

Totals
Change from base Build 3842033693:	0.0%
Covered Lines:	2049
Relevant Lines:	3539

---

💛 - Coveralls