Enhance Kepler.gl to parse different delimiter files

**Describe the bug**
While trying to upload the following dataset: https://data.buenosaires.gob.ar/api/files/arbolado-en-espacios-verdes.csv/download/csv

The above file uses the following delimiters:
- headers/content: semicolon
- decimal: comma

**To Reproduce**
Steps to reproduce the behavior:
1. Download the dataset from: https://data.buenosaires.gob.ar/api/files/arbolado-en-espacios-verdes.csv/download/csv
2. Try to import the new dataset onto Kepler
3. Nothing is displayed
4. While trying to create a new point layer manually, while choosing X and Y we see the following:

**Expected behavior**
Kepler.gl should be able to parse the content of the file and provide ability to select the correct property as source for layers

**Screenshots**
See above

**Desktop (please complete the following information):**
MacOs: 10.13.2
Google Chrome: Version 68.0.3440.106 (Official Build) (64-bit)

**Additional context**
Add any other context about the problem here.